Year	Dollars
1992-01-01	265803608
1997-01-01	480443501
2002-01-01	383029731
2003-01-01	437435510
2004-01-01	516992512
2005-01-01	521181215
2006-01-01	459235671
2007-01-01	405713278
2008-01-01	365248998
2009-01-01	336685936
2010-01-01	395457139
2011-01-01	398638074
2012-01-01	546705332
2013-01-01	612063101
2014-01-01	532115987
2015-01-01	525408785
2016-01-01	469651660