Year Dollars 1992-01-01 10817638 1997-01-01 25579102 2002-01-01 17856088 2003-01-01 16948303 2004-01-01 14259991 2005-01-01 19343803 2006-01-01 21325411 2007-01-01 33740732 2008-01-01 41599097 2009-01-01 28564294 2010-01-01 44795829 2011-01-01 53651041 2012-01-01 38779562 2013-01-01 62263773 2014-01-01 75978851 2015-01-01 59912588 2016-01-01 51788689