Year	US Dollars adjusted for inflation)
1982	2205.60998
1983	2201.39694
1984	2217.15645
1985	2293.28843
1986	2411.07211
1987	2416.35521
1988	2375.51426
1989	2454.80731
1990	2333.76468
1991	2263.27312
1992	2238.36528
1993	2307.32532
1994	2227.60808
1995	2357.15236
1996	2509.76337
1997	2512.49
1998	2556.01387
1999	2600.23927
2000	2766.53104
2001	2942.41194
2002	3052.565
2003	3171.00861
2004	3296.90235
2005	3412.0283
2006	3456.82244
2007	3651.35095
2008	3663.27682
2009	3462.60922
2010	3453.4343
2011	3624.5729
2012	3609.73712
2013	3510.92488
2014	3524.59565
2015	3555.05603
2016	3782.40485
2017	3851.01197