Since January 1980, the population of the city of Brownsville has grown according to the mathematical model, seen below, where x is the number of years since January 1980. Assuming the population continues to grow at the same rate, what would be the expected population of Brownsville in the year 2000?
y = 720,500(1.022)

A: 38,444,180

B: 1,113,402

C: 5,0826

D: 14,727,020