Year Dollars 1992-01-01 25614974 1997-01-01 11643419 2002-01-01 13781456 2003-01-01 9505288 2004-01-01 19028807 2005-01-01 33138263 2006-01-01 22436966 2007-01-01 27607000 2008-01-01 26176406 2009-01-01 15821231 2010-01-01 23033437 2011-01-01 36129023 2012-01-01 28356856 2013-01-01 26922874 2014-01-01 32434783 2015-01-01 25148453 2016-01-01 22706844