Year	Dollars
1992-01-01	19137757
1997-01-01	4786087
2002-01-01	4494361
2003-01-01	5311252
2004-01-01	39106867
2005-01-01	17577107
2006-01-01	6403783
2007-01-01	60976797
2008-01-01	16941801
2009-01-01	17701650
2010-01-01	14073059
2011-01-01	16019077
2012-01-01	22035591
2013-01-01	28535057
2014-01-01	24271379
2015-01-01	23885017
2016-01-01	31246911