Year Dollars 1992-01-01 27087501 1997-01-01 1076244 2002-01-01 16905401 2003-01-01 11596822 2004-01-01 30471009 2005-01-01 34537539 2006-01-01 41379851 2007-01-01 48961914 2008-01-01 53821329 2009-01-01 15419452 2010-01-01 30526239 2011-01-01 29583489 2012-01-01 32120055 2013-01-01 14672137 2014-01-01 14859831 2015-01-01 13447946 2016-01-01 4845152