Year Dollars 1992-01-01 7635388 1997-01-01 12326565 2002-01-01 25902468 2003-01-01 27813607 2004-01-01 14561177 2005-01-01 16240729 2006-01-01 23005834 2007-01-01 47392277 2008-01-01 32731018 2009-01-01 33959274 2010-01-01 25578583 2011-01-01 48224557 2012-01-01 38229493 2013-01-01 45954413 2014-01-01 45334827 2015-01-01 44251004 2016-01-01 51716044