Year	US Dollars adjusted for inflation)
1965	7001399096.99261
1966	7528998718.38555
1967	7999561103.91601
1968	8356048330.34865
1969	8755312830.67396
1970	9810513310.73095
1971	10052924828.1675
1972	10338113619.4967
1973	11008308873.8254
1974	11977953018.9277
1975	12862039179.3804
1976	13646310280.1797
1977	14587434913.7661
1978	15671154080.4916
1979	16826172369.6934
1980	17596182821.15
1981	18523048317.614
1982	18893794268.7453
1983	19706583918.7386
1984	20776045048.1382
1985	21802725604.2556
1986	20020292634.0075
1987	20276961363.9225
1988	21403459729.1846
1989	19863437589.00019
1990	16925987566.8214
1991	13354604094.5398
1992	7358386868.32664
1993	5202379407.71445
1994	4661332299.04745
1995	4782526716.11388
1996	5318169836.99483
1997	5877590284.17511
1998	6060083786.18071
1999	6233963131.76733
2000	6348564680.98529
2001	6653641918.03962
2002	7017851503.36986
2003	7793892689.16722
2004	8250406686.08771
2005	9042416092.8345
2006	9890890978.71625
2007	11111822549.2512
2008	11368955393.3071
2009	10953976999.9828
2010	11638536834.4274
2011	12479016474.3945
2012	13271494256.9938
2013	13721005574.3792
2014	14355373169.1671
2015	14768853639.6005
2016	15189614350.7215
2017	15946982915.8715