In 2007, the U.S. population was 302 million people. In 2012, it was 314 million. What was the rate of population change per year?
2012 - 2007 ==5 years
314 / 302 ==1.0397351 - overall population increase over 5 years.
1.0397351^(1/5) ==1.00782364 - 1 x 100 ==0.782364% percentage change in population per year over 5 years.
2.4 million
2 2/5 million people per year
