Year Dollars 1992-01-01 21924251 1997-01-01 30817892 2002-01-01 28230007 2003-01-01 26210424 2004-01-01 33122038 2005-01-01 34098873 2006-01-01 44538789 2007-01-01 45751948 2008-01-01 57487132 2009-01-01 42273427 2010-01-01 44082989 2011-01-01 51979895 2012-01-01 60145066 2013-01-01 50117329 2014-01-01 55370039 2015-01-01 45140438 2016-01-01 56917284