                 
                   
                              
                                 
                                                                                                                                                              
                     
                                                                                                                                       
                                
                                                                                                                                                                                                                              
                                                                                                   
                                 
1                                                                                 
2                                                                                               
3                                                                              
4                                                              
                                       
1                                                                                                    
2                                                                                                                                                           
3                                                                                                                          
4                                                                                                                                                                                                              
                                       
1             

                                                                                                      

2                  

                                                                         
3                   
                                                                                         
                                                                    

  
                                       1996   8     
                                2013   5     