Year Dollars 1997-01-01 3693933 2002-01-01 67307915 2003-01-01 36851542 2005-01-01 70701510 2007-01-01 143260027 2008-01-01 29145679 2012-01-01 150968779 2014-01-01 182132733 2016-01-01 151735778