           4   12.7% 

    7   10    

 2016          

   42.7%   2012    12.7%  10

     2016     

            

      

           

       2013   30%  2013  

34.5%  2014   37.5%  2015   40.0%  2016

 4           

           2019 

            50%  

            

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