                                                    9     3  2    1     6000          2            100                                             

 1991    1996                                                    

       

                                                        1991                               1500                100                                                  

         1991                  1994                                     

      

                                                         

                                                                  

   2000                                   

                                              

                                                                                          

                                                   

          32                                                                   

    

       