Year Dollars 1992-01-01 5307602 1997-01-01 9312364 2002-01-01 23994003 2003-01-01 13660661 2004-01-01 39778719 2005-01-01 28643566 2006-01-01 11806672 2007-01-01 30965410 2008-01-01 24809803 2009-01-01 12023368 2010-01-01 16242864 2011-01-01 24651607 2012-01-01 29353629 2013-01-01 28675377 2014-01-01 34121958 2015-01-01 26080785 2016-01-01 25539667