Year Dollars 1992-01-01 21695284 1997-01-01 34408359 2002-01-01 19399810 2003-01-01 5725191 2004-01-01 12923062 2005-01-01 14095734 2006-01-01 15037742 2007-01-01 13335831 2008-01-01 15451169 2009-01-01 14762465 2010-01-01 17027852 2011-01-01 24041651 2012-01-01 30596450 2013-01-01 31762733 2014-01-01 27425900 2015-01-01 4801092 2016-01-01 11228477