Year	Dollars
1992-01-01	48149909
1997-01-01	135031640
2002-01-01	43959828
2003-01-01	106401283
2004-01-01	83324863
2005-01-01	95202063
2006-01-01	128623560
2007-01-01	157999973
2008-01-01	231847819
2009-01-01	233496437
2010-01-01	296358882
2011-01-01	349149550
2012-01-01	439539130
2013-01-01	494580338
2014-01-01	516869908
2015-01-01	412479549
2016-01-01	389944897