Year	Dollars
1997-01-01	3883804
2002-01-01	8540098
2003-01-01	9569305
2004-01-01	6257698
2005-01-01	8933193
2006-01-01	9585879
2007-01-01	14135574
2008-01-01	15764943
2009-01-01	11071277
2010-01-01	12577619
2011-01-01	13690555
2012-01-01	16191688
2013-01-01	21650681
2014-01-01	19618330
2015-01-01	24282178
2016-01-01	35555245