Year Dollars 1992-01-01 729500 1997-01-01 462457 2002-01-01 1234601 2003-01-01 1061373 2004-01-01 644500 2005-01-01 499413 2006-01-01 724890 2007-01-01 2134946 2008-01-01 3733894 2009-01-01 5167001 2010-01-01 3581352 2011-01-01 2501143 2012-01-01 7081283 2013-01-01 6633813 2014-01-01 8947204 2015-01-01 21932586 2016-01-01 9302022