Year	US Dollars adjusted for inflation)
1966	6744463774.26399
1967	6866446743.97989
1968	7260864523.46929
1969	7665634040.8464
1970	8590447486.9683
1971	8801606996.03107
1972	10386649258.4903
1973	9816888669.14878
1974	9401706794.8319
1975	9377629751.71255
1976	8749868232.01924
1977	8522586143.71337
1978	8518009488.12502
1979	8427715068.13905
1980	7946142008.35258
1981	8155876294.19937
1982	8324640265.69535
1983	8483564175.08371
1984	8352718279.36481
1985	8106844692.61673
1986	8259463193.01261
1987	8907860360.4618
1988	9261885634.29692
1989	9926268878.99182
1990	10343225288.8337
1991	10843655223.0934
1992	11055707509.8002
1993	12096834825.5153
1994	12264181204.9453
1995	12552384194.7506
1996	12538108216.8096
1997	12395116123.8445
1998	12105745501.1695
1999	12232574233.6433
2000	12340062297.4414
2001	12506027443.4916
2002	12755809197.0836
2003	13223477673.779
2004	13398520166.8104
2005	13518275863.5085
2006	13910187625.8949
2007	14109375119.1096
2008	13994844142.6642
2009	13387952639.4356
2010	13191645685.5116
2011	13420054450.1934
2012	13336318908.0878
2013	13402832585.4643
2014	13494342660.3985
2015	13614800124.9838
2016	13801803129.785
2017	13868257226.838