Year Dollars 1992-01-01 842619 1997-01-01 2058620 2002-01-01 12495285 2008-01-01 51888112 2009-01-01 31190721 2010-01-01 54338888 2011-01-01 55075817 2012-01-01 46747154 2013-01-01 48932388 2014-01-01 60875612 2015-01-01 56467640 2016-01-01 45670926