Year Dollars 1992-01-01 26011148 1997-01-01 10698301 2002-01-01 10163746 2003-01-01 11504853 2004-01-01 12996245 2005-01-01 17445666 2006-01-01 15427397 2007-01-01 20480369 2008-01-01 24763638 2009-01-01 24281821 2010-01-01 31511311 2011-01-01 21964833 2012-01-01 14523923 2013-01-01 21012602 2014-01-01 19893918 2015-01-01 14893158 2016-01-01 20848410