Year Dollars 1992-01-01 34868771 1997-01-01 5242492 2002-01-01 9634038 2003-01-01 3435344 2004-01-01 9735630 2005-01-01 6815669 2006-01-01 10573786 2007-01-01 37266728 2008-01-01 49353129 2009-01-01 39553564 2010-01-01 24482709 2011-01-01 27876920 2012-01-01 65386365 2013-01-01 61680208 2014-01-01 38096119 2015-01-01 28492027 2016-01-01 46458601