Row  years  ventas     
   1      3       9   
   2      4      12                                    
   3      6      16                                    
   4      7      19                                    
   5      8      23                                    
   6     12      27                                    
   7     15      34                                    
   8     20      37                                    
   9     22      40                                    
  10     26      45