      5    83 . 2 % 

   4  19     

        5  

  83 . 2 %   10  7 . 3 % 

     2019   

   C S C O     

   

         

  C S C O       

      C S C O  

         

           

         

          

          

     

         

          

           

 1999  2008     7   

    45200    

  1 . 53 %  11 . 88 %     

  98 . 46 %  86 . 36 %     

           

          

    