Year	Dollars
1997-01-01	4597997
2002-01-01	21665759
2003-01-01	9050679
2004-01-01	11223278
2005-01-01	24208621
2006-01-01	18746848
2007-01-01	25852019
2008-01-01	65566581
2009-01-01	49518179
2010-01-01	51751632
2011-01-01	74418194
2012-01-01	59165943
2013-01-01	80387283
2014-01-01	103615268
2015-01-01	159859932
2016-01-01	201726413