Answer:
314,332,052
Explanation:
0.91% = 0.0091
2008 = 303,146,000 0.91% of that = 2,758,628.6
2009 = 305,904,629 0.91% of that = 2,783,732.1
2010 = 308,688,361 0.91% of that = 2,809,064
2011 = 311,497,425 0.91% of that = 2,834,626.5
2012 = 314,332,052
Extra Note: Today we are at about 331,000,000 people in the USA