           2017                              [ 2017 ] 488         2017                 [ 2017 ] 70          8  12         2017               
 

      20        4      5     3      8      8  8  10           70   8  11              50       
        8  12                                                                                                                                                                   50%       30%     20%           
                                                                               8  12  18       