Year	Dollars
1992-01-01	1834525
1997-01-01	4338096
2002-01-01	3140415
2003-01-01	4603397
2004-01-01	7604621
2005-01-01	12615786
2006-01-01	21813484
2007-01-01	46927247
2008-01-01	43807388
2009-01-01	32594169
2010-01-01	19630811
2011-01-01	15937843
2012-01-01	12152645
2013-01-01	13062345
2014-01-01	19332477
2015-01-01	23633725
2016-01-01	16348472