Year Dollars 1992-01-01 39104619 1997-01-01 76646724 2002-01-01 138254142 2003-01-01 139507242 2004-01-01 161757520 2005-01-01 168483059 2006-01-01 148195542 2007-01-01 180052558 2008-01-01 214211062 2009-01-01 150330556 2010-01-01 188544971 2011-01-01 198263057 2012-01-01 217906403 2013-01-01 269593123 2014-01-01 168176990 2015-01-01 191605225 2016-01-01 211923372