Year	Dollars
1997-01-01	21620803
2002-01-01	84351014
2003-01-01	98958790
2004-01-01	97939783
2005-01-01	124615872
2006-01-01	151639507
2007-01-01	249208207
2008-01-01	359475453
2009-01-01	340164967
2010-01-01	459301883
2011-01-01	448949064
2012-01-01	427959014
2013-01-01	459506992
2014-01-01	435440268
2015-01-01	580055569
2016-01-01	689844922