  

         1968  10    

         

  1990  7       1994  10  

             

            

    

1990  7   1997  4      

         

1997  4   1998  12      

         

   

1998  12   2000  1      

       

   

2000  1   2007  12      

       

 

2007  12   2010  1     

       

2010  1   2012  2      

           



2012  2   2013  4      

         

2013  4   2016  7      

             

      

2016  7             

              

 

            

              

     