Year	Dollars
1992-01-01	11007596
1997-01-01	24039390
2002-01-01	19266692
2003-01-01	19327598
2004-01-01	18494722
2005-01-01	18280364
2006-01-01	21000164
2007-01-01	27793579
2008-01-01	26913848
2009-01-01	24373355
2010-01-01	21891243
2011-01-01	23022281
2012-01-01	47504113
2013-01-01	32784084
2014-01-01	32711828
2015-01-01	26977953
2016-01-01	25739509