Year Dollars 1992-01-01 22440893 1997-01-01 37714567 2002-01-01 26678709 2003-01-01 29943194 2004-01-01 36660339 2005-01-01 35282206 2006-01-01 59004540 2007-01-01 62176708 2008-01-01 64937266 2009-01-01 47036124 2010-01-01 58910327 2011-01-01 51451437 2012-01-01 64645737 2013-01-01 67432141 2014-01-01 66938496 2015-01-01 63676566 2016-01-01 47514279