Year	Dollars
1992-01-01	3621193
1997-01-01	7036551
2002-01-01	4845499
2003-01-01	7588735
2004-01-01	12047770
2005-01-01	15779306
2006-01-01	45645684
2007-01-01	11941999
2008-01-01	43244834
2009-01-01	40187233
2010-01-01	97909395
2011-01-01	58337937
2012-01-01	38271203
2013-01-01	106693638
2014-01-01	34353102
2015-01-01	17015411
2016-01-01	30166634