Year Dollars 1992-01-01 7150217 1997-01-01 8414614 2002-01-01 7840265 2003-01-01 7305181 2004-01-01 6591898 2005-01-01 12579959 2006-01-01 10351118 2007-01-01 12102718 2008-01-01 18832524 2009-01-01 12251189 2010-01-01 18437678 2011-01-01 16391091 2012-01-01 19787199 2013-01-01 16209172 2014-01-01 25796791 2015-01-01 14673389 2016-01-01 13381089