Year	Dollars
1997-01-01	6993882
2002-01-01	13868602
2003-01-01	17716098
2004-01-01	23954139
2005-01-01	15629644
2006-01-01	21534388
2007-01-01	38325861
2008-01-01	34312185
2009-01-01	37262088
2010-01-01	44192995
2011-01-01	46705694
2012-01-01	46370799
2013-01-01	49300975
2014-01-01	45962009
2015-01-01	45417075
2016-01-01	43861469