Year	Dollars
1992-01-01	4629358
1997-01-01	9109349
2002-01-01	15592405
2003-01-01	8185444
2004-01-01	9289915
2005-01-01	12584717
2006-01-01	19723527
2007-01-01	18752656
2008-01-01	16444898
2009-01-01	8543748
2010-01-01	8489365
2011-01-01	10986712
2012-01-01	11700905
2013-01-01	18185135
2014-01-01	10352091
2015-01-01	6051109
2016-01-01	4257702