Year Dollars 1992-01-01 21857884 1997-01-01 96689424 2002-01-01 43553963 2003-01-01 85748869 2004-01-01 90910550 2005-01-01 61515521 2006-01-01 70961372 2007-01-01 97876611 2008-01-01 86858050 2009-01-01 80986356 2010-01-01 132302657 2011-01-01 173955751 2012-01-01 192188106 2013-01-01 270527868 2014-01-01 179972299 2015-01-01 264987038 2016-01-01 271924971