Year Dollars 1992-01-01 30563892 1997-01-01 52731227 2002-01-01 46645497 2003-01-01 46161740 2004-01-01 63509632 2005-01-01 38346541 2006-01-01 37326622 2007-01-01 40274189 2008-01-01 43732918 2009-01-01 32755012 2010-01-01 45221698 2011-01-01 51225514 2012-01-01 38926221 2013-01-01 41650177 2014-01-01 46004104 2015-01-01 33881734 2016-01-01 29271959