Year	Dollars
1997-01-01	41100446
2002-01-01	18771179
2003-01-01	21188683
2004-01-01	20288996
2005-01-01	29824576
2006-01-01	25636599
2007-01-01	32787721
2008-01-01	21138757
2009-01-01	19006606
2010-01-01	11936245
2011-01-01	12705113
2012-01-01	13131701
2013-01-01	15658786
2014-01-01	20520649
2015-01-01	23090200
2016-01-01	23037694