Year	US Dollars adjusted for inflation)
1960	4275559984.97522
1961	4875723369.89355
1962	5009438286.30363
1963	5290197126.56463
1964	5693865606.25552
1965	5733372508.83879
1966	5965965200.97431
1967	6087820894.29776
1968	6405309787.74795
1969	6580218398.45883
1970	6812739398.50658
1971	6883614534.41532
1972	7281511366.54347
1973	7402124228.04104
1974	7683967670.62109
1975	7797533899.91494
1976	8296977553.50472
1977	9053810550.95356
1978	9960683284.24946
1979	10319205204.4799
1980	10209242962.9907
1981	10639636877.0922
1982	11044926491.1004
1983	9905818874.36155
1984	9336144372.24168
1985	8951372695.80986
1986	8657604107.21669
1987	8262694155.74715
1988	7938993517.0426
1989	7873336116.79827
1990	7992098767.2402
1991	8206450868.03786
1992	8071273867.53484
1993	7953959542.09829
1994	8237589855.65374
1995	8621227010.83132
1996	9236306501.87016
1997	9931140423.20578
1998	10738002283.7083
1999	11599707384.4148
2000	12400244892.3938
2001	12917152086.8173
2002	13942348941.8823
2003	15955821613.0323
2004	17224244593.4511
2005	18293696732.9071
2006	20709938763.5846
2007	21694528592.531
2008	22430064525.9668
2009	21445251799.8021
2010	22157948396.2042
2011	22092725493.4615
2012	22378600710.7753
2013	22598101173.2822
2014	22541117176.86909
2015	22883102657.9866
2016	21519942194.5088
2017	21017233305.3574