Year	Dollars
1992-01-01	18161806
1997-01-01	20849299
2002-01-01	13129678
2003-01-01	14119787
2004-01-01	15205210
2005-01-01	15333579
2006-01-01	16428665
2007-01-01	18146046
2008-01-01	21865065
2009-01-01	25522426
2010-01-01	27710552
2011-01-01	26252095
2012-01-01	45091646
2013-01-01	38174341
2014-01-01	32692273
2015-01-01	36305074
2016-01-01	27728370