Year	Dollars
1997-01-01	168808
2002-01-01	593592
2003-01-01	263073
2004-01-01	208187
2005-01-01	518542
2006-01-01	2022116
2007-01-01	308445
2008-01-01	1134438
2009-01-01	3695168
2010-01-01	1330905
2011-01-01	1184427
2012-01-01	1192348
2013-01-01	831251
2014-01-01	503169
2015-01-01	580424
2016-01-01	658551