Year Dollars 1992-01-01 5094462 1997-01-01 17243004 2002-01-01 17951696 2003-01-01 17781225 2004-01-01 30017571 2005-01-01 24870162 2006-01-01 21229778 2007-01-01 28309752 2008-01-01 30599945 2009-01-01 34310963 2010-01-01 40449537 2011-01-01 50268003 2012-01-01 56175468 2013-01-01 41095438 2014-01-01 40178749 2015-01-01 39147936 2016-01-01 40806175