Year	Dollars
1992-01-01	4386720
1997-01-01	15053266
2002-01-01	1683259
2003-01-01	3839683
2004-01-01	7573101
2005-01-01	12161379
2006-01-01	37242961
2007-01-01	39342108
2008-01-01	13313418
2009-01-01	18609451
2010-01-01	41079045
2011-01-01	14720647
2012-01-01	19883759
2013-01-01	21338148
2014-01-01	20204731
2015-01-01	21656684
2016-01-01	78717270