                               2017  5  16                           
                                                                                               10                                                
       1965                                   1993  1995           1997                                    
                                                         20                                                                                                                                              
                                                                                                                                          
                                                                                                                                                                                                                                                                                                                                               

            

 

                                                                                                
                                                                                                                 
                                                                         

     

 

            

 

                                                                                                                                                                                                                
                                                                                                                                  
                                                                                                                                                                
                                                                                                                                                          

                   

 

 

            

 

 

 

 

 

 

 

 

 

 

 

 

 

 

             