The graph provides a good approximation of the number of food stamp recipients (in millions) from 1994 through 2004. Use the given ordered pairs to find the average rate of change in food stamp recipients per year during this period. The average rate of change is million recipients per year. (Type an integer or decimal rounded to two decimal places as needed.) Recipients (in millions) 28-(1994,27.6) 26- 24- 22- 20- (2004,21.5) 18- 1004 1000 2004