Year Dollars 1992-01-01 12047541 1997-01-01 31881302 2002-01-01 32584812 2003-01-01 36716938 2004-01-01 70196136 2005-01-01 97411876 2006-01-01 87519338 2007-01-01 137813532 2008-01-01 71076267 2009-01-01 108754081 2010-01-01 76452793 2011-01-01 80721201 2012-01-01 181193227 2013-01-01 145368841 2014-01-01 175357695 2015-01-01 106503129 2016-01-01 101896592