Year	Dollars
1992-01-01	4718262
1997-01-01	5843534
2002-01-01	14829705
2003-01-01	20015736
2004-01-01	24103710
2005-01-01	20764450
2006-01-01	22641988
2007-01-01	19813774
2008-01-01	12550604
2009-01-01	8027549
2010-01-01	13991300
2011-01-01	17748669
2012-01-01	16936745
2013-01-01	16028799
2014-01-01	14308884
2015-01-01	16067130
2016-01-01	21242333