Year Dollars 1989-01-01 28906 1993-01-01 31241 1995-01-01 34076 1996-01-01 35492 1997-01-01 37005 1998-01-01 38885 1999-01-01 40696 2000-01-01 41990 2001-01-01 42228 2002-01-01 42409 2003-01-01 43318 2004-01-01 44334 2005-01-01 46242 2006-01-01 48451 2007-01-01 50740 2008-01-01 52029 2009-01-01 50221 2010-01-01 50046 2011-01-01 50502 2012-01-01 51371 2013-01-01 52250 2014-01-01 53657 2015-01-01 55775 2016-01-01 57617