Year	US Dollars adjusted for inflation)
1960	3363351817.59838
1961	3575786407.92048
1962	3627080022.93264
1963	3853567395.09688
1964	3810940317.01132
1965	3998079231.29524
1966	4058975176.54646
1967	4398589992.04382
1968	4485248151.64721
1969	5042685369.70017
1970	6180574929.7186
1971	6731733054.05579
1972	7292471252.71694
1973	7482419323.23191
1974	7978141097.71414
1975	7824065382.81078
1976	7860434682.70488
1977	7321153589.41202
1978	7122975636.75526
1979	7357822664.98873
1980	8418871013.71605
1981	9473370376.57417
1982	9722927101.85247
1983	9877065196.01081
1984	9688673994.67355
1985	10361493086.2192
1986	10578983844.2936
1987	10700720147.2523
1988	11508878607.8309
1989	12107313415.726
1990	12953439422.5707
1991	13669995462.2963
1992	12437567476.9265
1993	12568343338.4872
1994	13729054824.3571
1995	13750750266.5438
1996	15175423801.5882
1997	15582215327.8584
1998	16031795261.4766
1999	15900683889.3837
2000	15414251817.4506
2001	15636157710.23
2002	14245474181.9222
2003	11824445227.9016
2004	11137736042.1185
2005	10501650599.6496
2006	10138136483.9323
2007	9767757202.06842
2008	8041897398.2499
2009	9008498121.57995
2010	10141859700
2011	11708344268.927
2012	13438790149.5964
2013	14181926648.1393
2014	14483588127.7201
2015	14728302049.465
2016	14818986230.9668
2017	15329810785.8393