Year Dollars 1992-01-01 15170829 1997-01-01 7797896 2002-01-01 17063211 2003-01-01 17734251 2004-01-01 32263337 2005-01-01 41222160 2006-01-01 36310606 2007-01-01 35223716 2008-01-01 60651166 2009-01-01 32359288 2010-01-01 36551098 2011-01-01 32683693 2012-01-01 48059115 2013-01-01 34705662 2014-01-01 40015716 2015-01-01 26579206 2016-01-01 29888878