Year Dollars 1992-01-01 12350471 1997-01-01 14336748 2002-01-01 23102226 2003-01-01 28777731 2004-01-01 37427660 2005-01-01 44165756 2006-01-01 41075757 2007-01-01 37541443 2008-01-01 49053821 2009-01-01 29441031 2010-01-01 28442997 2011-01-01 30389269 2012-01-01 29821832 2013-01-01 36014802 2014-01-01 43090748 2015-01-01 46047882 2016-01-01 50269042