Year	Dollars
1992-01-01	12771810675
1997-01-01	23681007367
2002-01-01	23483227563
2003-01-01	23961181009
2004-01-01	27496036385
2005-01-01	32328474860
2006-01-01	38867786372
2007-01-01	45635029238
2008-01-01	49790545325
2009-01-01	38546194060
2010-01-01	46749205630
2011-01-01	60763747925
2012-01-01	63771322578
2013-01-01	60473461390
2014-01-01	61947077694
2015-01-01	58266162792
2016-01-01	55018029674