Year	Dollars
1992-01-01	3975874
1997-01-01	6927405
2002-01-01	17966306
2003-01-01	18820867
2004-01-01	25474668
2005-01-01	13250855
2006-01-01	14492225
2007-01-01	12996990
2008-01-01	20215869
2009-01-01	36215776
2010-01-01	36358801
2011-01-01	33653809
2012-01-01	30051679
2013-01-01	25968714
2014-01-01	19708607
2015-01-01	19325153
2016-01-01	22154766