Year	US Dollars adjusted for inflation)
1984	376.61933
1985	382.01128
1986	383.80122
1987	388.70668
1988	399.70424
1989	419.85992
1990	431.88172
1991	448.02715
1992	476.77575
1993	505.11003
1994	539.60812
1995	581.07608
1996	625.58427
1997	667.14286
1998	696.61002
1999	721.23567
2000	761.61017
2001	800.25993
2002	842.36552
2003	891.87118
2004	950.12991
2005	1012.37071
2006	1073.0128
2007	1138.87368
2008	1191.99875
2009	1244.03715
2010	1310.37027
2011	1377.13398
2012	1433.12914
2013	1493.56251
2014	1565.0205
2015	1651.23468
2016	1735.29095
2017	1834.65159