Year Dollars 1992-01-01 45944363 1997-01-01 112430259 2002-01-01 178652613 2003-01-01 138211214 2004-01-01 200590548 2005-01-01 228628658 2006-01-01 165164233 2007-01-01 171137451 2008-01-01 152360519 2009-01-01 243723458 2010-01-01 217482124 2011-01-01 201036719 2012-01-01 150597590 2013-01-01 157827268 2014-01-01 184114966 2015-01-01 179653380 2016-01-01 219745839