                          

                                        

                  
 
                                                                          
 
                                                                                                                                                                                  
 
                    
 
                                                                                                                
 
              
 
     11                                                                                                                        
 
            
 
                                                                                                 
 
                       
 
                
 
                 2001                                                                                   28                                                     
 
                         
 
                                                                                                                                                                                           
 
             
 
                                                
 
                                                                                                     
 
              
 
                                                   
 
                  
 
                                                         
 
                   
 
                                                            
 
                       
 
               
 
                                                                                                                     
 
      
 
                                                         
 
               
 
                                                                                                      
 
     
 
                                   
 
        
 
                                                                     
 
                    
 
               
 
                                                                                                                                                    
 
                     
 
                                                                                                               12                                                   
 
           
 
    2005            2006                                                                                                          
 
                                       
 
                                                                                                                     
 
      
 
                                                                                                
 
                
 
         
 
                                                                                          
 
      
 
                                                  
 
                  
 
                                                                                                            
 
             
 
                                                                
 
           
 
                                                                                                  
 

 

 

 

 

 

 

 

 

 

 

 
                   
 
             
 
                                 
 
                   
 
                                                                     
 
      
 
                                       
 
                                         
 
                              
 
            
 
                   
 
                                                                   
 
        
 
                                                              
 
             
 
                               
 
                  
 
                                                                                                                                                
 
    
 
                 
            
 
       