Year US Dollars adjusted for inflation) 2000 9342.85662 2001 9747.96668 2002 9949.08864 2003 9638.90077 2004 10138.49913 2005 10701.03038 2006 10360.37124 2007 10356.70776 2008 9638.7353 2009 9071.94914 2010 8932.28139 2011 9439.07226 2012 9738.1304 2013 9516.21088 2014 9692.27175 2015 10577.58332 2016 10477.98208 2017 9983.22571