Year	Dollars
1992-01-01	151155875
1997-01-01	231150658
2002-01-01	230101549
2003-01-01	261935270
2004-01-01	332640708
2005-01-01	355795201
2006-01-01	456270387
2007-01-01	502891858
2008-01-01	466824154
2009-01-01	366399101
2010-01-01	490792516
2011-01-01	477930639
2012-01-01	421739977
2013-01-01	376082755
2014-01-01	448070178
2015-01-01	443073109
2016-01-01	456151546