Year	Dollars
1992-01-01	490353370
1997-01-01	400845460
2002-01-01	577189199
2003-01-01	623605785
2004-01-01	491448599
2005-01-01	425717842
2006-01-01	686334837
2007-01-01	619435668
2008-01-01	669029502
2009-01-01	481454998
2010-01-01	473545374
2011-01-01	574663042
2012-01-01	570364890
2013-01-01	520717938
2014-01-01	530859647
2015-01-01	522978400
2016-01-01	522295404