Year US Dollars adjusted for inflation) 2000 1919.83783 2001 2436.03967 2002 2417.32163 2003 2560.14245 2004 2625.23509 2005 2781.73184 2006 2883.73864 2007 3069.09806 2008 3125.06809 2009 3203.66289 2010 3283.21194 2011 3411.78282 2012 3482.95114 2013 3565.13313 2014 3612.40082 2015 3802.0484 2016 3925.37815 2017 4068.21008