Year Dollars 1992-01-01 64277957 1997-01-01 87971237 2002-01-01 73791555 2003-01-01 97138932 2004-01-01 148829520 2005-01-01 161139793 2006-01-01 147379689 2007-01-01 148808009 2008-01-01 182634710 2009-01-01 148839570 2010-01-01 187547603 2011-01-01 186781561 2012-01-01 134489450 2013-01-01 171105346 2014-01-01 121843620 2015-01-01 98874060 2016-01-01 77327003