   2015/01/06     
           
                                                                                                                                       
      
                      
                                
 
               
                
 
                 
         
 
                    
                                                                  
 
               
                                                
 
             
                                           100       
 
             
     40                     
 
               
                                                                     
 
            
                
 
             
                        
 
                                   
                                                    
 
                
                   
      
              
 
                                                              
                                                                                                                                                                               
 
                 
                                                                                            
 
                             
                                                                            
 
                     
                                                                                                                                                                                              
 
                    
    25                 
 
                    
                                                                                                            
 
                      
                                                                        
 
              
                                                                                                        
 
                     
                                                                
 
                                       
                                                 
 
                             
                                                                                
                       
                                                      
      
                
 
              
                                                                              
 
                
                                                                                                   
 
                                
                                                
 
                  
                          
 
                                           
                                                                                           
 
                        
                                                   
 
                           
                                                                                                                                                           
 
                
 1982       1984         1990                      
 
                      
                                                                                                    
 
  20                                30          
               30                  
 
                
                                                                             
 
                           
                                   
 
                                          
                                                              
      
              
 
           
                                                        
 
             
                                   
 
                            
                                                                
 
                          
                                          
 
             
        
 
            
                    
 
                         
                                                            
      
      /    /        