Year Dollars 1992-01-01 25322024 1997-01-01 36051747 2002-01-01 18899739 2003-01-01 16358092 2004-01-01 23911018 2005-01-01 33870068 2006-01-01 22476551 2007-01-01 23698934 2008-01-01 25512451 2009-01-01 28799236 2010-01-01 28308657 2011-01-01 30642286 2012-01-01 27252027 2013-01-01 36147083 2014-01-01 27025971 2015-01-01 28142373 2016-01-01 28505960