Year Dollars 1992-01-01 30362544 1997-01-01 85398417 2002-01-01 130586229 2003-01-01 129194705 2004-01-01 113779164 2005-01-01 122587700 2006-01-01 139202347 2007-01-01 144087331 2008-01-01 178548939 2009-01-01 131705631 2010-01-01 185096884 2011-01-01 182776133 2012-01-01 191328549 2013-01-01 161118263 2014-01-01 146177019 2015-01-01 152662120 2016-01-01 276714877