Year	Dollars
1997-01-01	400816
2002-01-01	1450356
2003-01-01	4436822
2004-01-01	3805809
2005-01-01	4715698
2006-01-01	4903347
2007-01-01	10911363
2008-01-01	17448716
2009-01-01	12521699
2010-01-01	25737358
2011-01-01	38133277
2012-01-01	39615053
2013-01-01	52667260
2014-01-01	58746630
2015-01-01	53973259
2016-01-01	24809306