Year Dollars 1992-01-01 17133544 1997-01-01 58907823 2002-01-01 73651896 2003-01-01 119424139 2004-01-01 92220308 2005-01-01 92052618 2006-01-01 105545751 2007-01-01 127887346 2008-01-01 174815125 2009-01-01 160093763 2010-01-01 215381717 2011-01-01 246614320 2012-01-01 274702535 2013-01-01 252488178 2014-01-01 256149520 2015-01-01 282122390 2016-01-01 272306189