Year Dollars 1992-01-01 60619375 1997-01-01 124382885 2002-01-01 54775454 2003-01-01 85771066 2004-01-01 91714897 2005-01-01 107916066 2006-01-01 142553746 2007-01-01 175198529 2008-01-01 207299649 2009-01-01 138388747 2010-01-01 250953700 2011-01-01 294372438 2012-01-01 284142425 2013-01-01 309918361 2014-01-01 241214567 2015-01-01 203228503 2016-01-01 171959654