Year	Dollars
1992-01-01	10878815
1997-01-01	16221497
2002-01-01	12726151
2003-01-01	26196877
2004-01-01	25852670
2005-01-01	18522047
2006-01-01	13468727
2007-01-01	27622731
2008-01-01	49159980
2009-01-01	16633899
2012-01-01	28124568
2013-01-01	36404379
2015-01-01	45863809
2016-01-01	51453339