Year	Dollars
1992-01-01	8872455187
1997-01-01	13671519738
2002-01-01	13677606902
2003-01-01	14106072138
2004-01-01	16274512296
2005-01-01	19514235455
2006-01-01	23494121746
2007-01-01	26734083628
2008-01-01	31477660481
2009-01-01	25991557365
2010-01-01	32134226679
2011-01-01	37330081206
2012-01-01	35082906502
2013-01-01	36985116907
2014-01-01	36468001728
2015-01-01	36187537727
2016-01-01	33244507064