Year	Dollars
1992-01-01	6624860913
1997-01-01	9830978897
2002-01-01	13161796690
2003-01-01	15003711625
2004-01-01	17922727456
2005-01-01	18806198474
2006-01-01	18051320932
2007-01-01	21183502202
2008-01-01	25414468828
2009-01-01	21975388376
2010-01-01	26689375189
2011-01-01	31806599094
2012-01-01	32900183273
2013-01-01	33996766253
2014-01-01	36093516665
2015-01-01	35619926891
2016-01-01	31966620459