Year Dollars 1992-01-01 34906028 1997-01-01 66365461 2002-01-01 65942598 2003-01-01 40642621 2004-01-01 37943681 2005-01-01 35854246 2006-01-01 47256819 2007-01-01 49558037 2008-01-01 37991635 2009-01-01 29938955 2010-01-01 28930065 2011-01-01 28627651 2012-01-01 27997026 2013-01-01 27560882 2014-01-01 38589085 2015-01-01 25995602 2016-01-01 27399154