Year	Dollars
1992-01-01	15245903
1997-01-01	33655299
2002-01-01	22705826
2003-01-01	35154096
2004-01-01	32744872
2005-01-01	37979832
2006-01-01	61539107
2007-01-01	186677691
2008-01-01	278152925
2009-01-01	116561342
2010-01-01	309654354
2011-01-01	443310843
2012-01-01	407695949
2013-01-01	347430528
2014-01-01	316941011
2015-01-01	265175297
2016-01-01	133550172