Year Dollars 1992-01-01 1233040 1997-01-01 16457262 2002-01-01 3665868 2003-01-01 4211879 2004-01-01 3702120 2005-01-01 6003656 2006-01-01 8824937 2007-01-01 15372043 2008-01-01 17621524 2009-01-01 19210530 2010-01-01 18793453 2011-01-01 14285336 2012-01-01 18507664 2013-01-01 26286378 2014-01-01 24961461 2015-01-01 16552666 2016-01-01 12931095