Year Dollars 1992-01-01 254613 1997-01-01 1158658 2002-01-01 2090422 2003-01-01 2431673 2004-01-01 3079931 2005-01-01 7638844 2006-01-01 10592914 2007-01-01 5899003 2008-01-01 5549875 2009-01-01 3895388 2010-01-01 4643943 2011-01-01 2687719 2012-01-01 2905970 2013-01-01 5489743 2014-01-01 3883901 2015-01-01 4341138 2016-01-01 13470664