Year US Dollars adjusted for inflation) 2000 60858.19122 2001 60707.11988 2002 62167.55765 2003 60460.4202 2004 65405.71777 2005 61688.81193 2006 66623.13611 2007 66761.62274 2008 67262.45171 2009 65769.00718 2010 70306.22784 2011 72670.95866 2012 70396.81612 2013 68899.48531 2014 67901.21881 2015 67277.24313 2016 66410.75647 2017 65696.38713