Year Dollars 1992-01-01 11364029 1997-01-01 12952083 2002-01-01 20806608 2003-01-01 17466126 2004-01-01 19153440 2005-01-01 52011309 2006-01-01 33480086 2007-01-01 28885988 2008-01-01 41911325 2009-01-01 42330586 2010-01-01 37758850 2011-01-01 31051485 2012-01-01 41406753 2013-01-01 24312534 2014-01-01 23792927 2015-01-01 21550321 2016-01-01 33867588