Year Dollars 1992-01-01 42961310 1997-01-01 62042898 2002-01-01 67358827 2003-01-01 93494567 2004-01-01 157257422 2005-01-01 200077439 2006-01-01 228727050 2007-01-01 180701419 2008-01-01 145857007 2009-01-01 108603759 2010-01-01 142476641 2011-01-01 153491682 2012-01-01 139938332 2013-01-01 140248126 2014-01-01 178732950 2015-01-01 173716240 2016-01-01 190553542