Year	US Dollars adjusted for inflation)
2002	364.57057
2003	376.75871
2004	364.09544
2005	389.41636
2006	397.9859
2007	440.36816
2008	444.95014
2009	524.82353
2010	553.30029
2011	569.23339
2012	630.42741
2013	633.65841
2014	630.32001
2015	620.05652
2016	617.88997
2017	618.33279