Year	Dollars
1997-01-01	4295299
2002-01-01	7480769
2003-01-01	7587566
2004-01-01	9921992
2005-01-01	10138739
2006-01-01	10768086
2007-01-01	14829367
2008-01-01	13464926
2009-01-01	8775740
2010-01-01	8653550
2011-01-01	11251936
2012-01-01	26642322
2013-01-01	23018241
2014-01-01	13445189
2015-01-01	9209426
2016-01-01	16131261