Year Dollars 1992-01-01 7676900 1997-01-01 14055555 2002-01-01 14687116 2003-01-01 9716712 2004-01-01 11218230 2005-01-01 18297631 2006-01-01 9045292 2007-01-01 10074053 2008-01-01 10763057 2009-01-01 6560205 2010-01-01 15750856 2011-01-01 13451358 2012-01-01 13260775 2013-01-01 8888209 2014-01-01 11529569 2015-01-01 10725155 2016-01-01 15326468