Year	Dollars
1997-01-01	3945839
2002-01-01	6174907
2003-01-01	5572776
2004-01-01	13180248
2005-01-01	23028787
2006-01-01	19357392
2007-01-01	32212769
2008-01-01	54099089
2009-01-01	27816062
2010-01-01	19063185
2011-01-01	24535520
2012-01-01	47526688
2013-01-01	106955810
2014-01-01	27052921
2015-01-01	16585028
2016-01-01	13663518