Answer:
4,000
Step-by-step explanation:
you take this years total (2683) 
and add how many more there was last year (1317) 
then you get 4000!! 
hope it helps
 
        
             
        
        
        
There's a site called m.a.t.h.w.a.y, and you can type in those functions in order to get the graph ;)