Year	Dollars
1992-01-01	1970764
1997-01-01	16582719
2002-01-01	3572661
2003-01-01	5380828
2004-01-01	8211433
2005-01-01	12821038
2006-01-01	18716984
2007-01-01	35120285
2008-01-01	25306420
2009-01-01	14875163
2010-01-01	46392274
2011-01-01	64667427
2012-01-01	80391219
2013-01-01	50844216
2014-01-01	29956744
2015-01-01	21429172
2016-01-01	17872528