Year Dollars 1992-01-01 25612883 1997-01-01 36503885 2002-01-01 148676901 2003-01-01 123002851 2004-01-01 222355472 2005-01-01 102682592 2006-01-01 94975326 2007-01-01 139074948 2008-01-01 220158360 2009-01-01 103691253 2010-01-01 109003870 2011-01-01 142705423 2012-01-01 121275127 2013-01-01 151541380 2014-01-01 231752678 2015-01-01 248571278 2016-01-01 212004595