Year Dollars 1992-01-01 31646501 1997-01-01 45530880 2002-01-01 23059157 2003-01-01 23566361 2004-01-01 35237102 2005-01-01 36050553 2006-01-01 244386719 2007-01-01 79472952 2008-01-01 167267009 2009-01-01 119905892 2010-01-01 135739609 2011-01-01 140667999 2012-01-01 131549895 2013-01-01 159643405 2014-01-01 122426879 2015-01-01 78298113 2016-01-01 82715493