Year	Dollars
1992-01-01	195616684
1997-01-01	198111946
2002-01-01	255536322
2003-01-01	240852086
2004-01-01	272515386
2005-01-01	325615136
2006-01-01	401160802
2007-01-01	448298453
2008-01-01	568579786
2009-01-01	394655211
2010-01-01	514458934
2011-01-01	479037766
2012-01-01	459494781
2013-01-01	373808691
2014-01-01	535682676
2015-01-01	477641083
2016-01-01	487164869