Year Dollars 1992-01-01 78947204 1997-01-01 59987242 2002-01-01 82458506 2003-01-01 52309176 2004-01-01 177089864 2005-01-01 72490717 2006-01-01 174675584 2007-01-01 60803106 2008-01-01 314169024 2009-01-01 114941741 2010-01-01 152365114 2011-01-01 97470539 2012-01-01 89982570 2013-01-01 151450584 2014-01-01 234904207 2015-01-01 270630480 2016-01-01 253190452