Year	US Dollars adjusted for inflation)
1960	2234326591.95723
1961	2275788081.61845
1962	2406983760.73282
1963	2493164290.84688
1964	2628210163.98886
1965	2865725629.35676
1966	3019725204.58929
1967	3200230572.89257
1968	3411387650.34168
1969	3433747210.20912
1970	3558279639.3191
1971	3700433039.25466
1972	3913663272.94645
1973	4221662800.00125
1974	4169835905.71639
1975	4258681838.89887
1976	4705872947.05537
1977	5194525574.60387
1978	5714274287.18995
1979	5980812086.73738
1980	6020792666.98167
1981	6173311521.09215
1982	6087427396.83327
1983	6031158121.15659
1984	6293253628.50452
1985	6556829797.51296
1986	6604214488.79062
1987	7002540422.39356
1988	7325347220.13049
1989	7642230954.99457
1990	7649634778.63051
1991	7898403488.66196
1992	8342633065.38204
1993	8862381777.96812
1994	8746882151.05013
1995	9102265883.78003
1996	9429515072.81904
1997	9900398521.65924
1998	10187667041.2616
1999	9995167517.71457
2000	10569704556.9194
2001	10857538040.412
2002	11265166701.8573
2003	11777398118.373
2004	12511401249.9967
2005	13268415996.7103
2006	14139785190.6771
2007	15014801358.9561
2008	15650167709.792
2009	15269613868.5127
2010	15839344591.9842
2011	16446892853.4328
2012	17125933703.7093
2013	17604014377.0727
2014	18142359318.8949
2015	18839040425.3557
2016	19545909275.2757
2017	20481239263.2949