Year	Dollars
1997-01-01	3906125
2002-01-01	7029955
2003-01-01	10697006
2004-01-01	9342851
2005-01-01	11759611
2006-01-01	10593526
2007-01-01	13906446
2008-01-01	13073404
2009-01-01	11270815
2010-01-01	15218389
2011-01-01	19147399
2012-01-01	19477247
2013-01-01	20676567
2014-01-01	19896269
2015-01-01	20311828
2016-01-01	13645482