Year	US Dollars adjusted for inflation)
1967	1944068679.30504
1968	2016162720.4351
1969	2020820044.61598
1970	2144836858.6076
1971	2199937632.21704
1972	2328502348.91457
1973	2294619943.28721
1974	2259539194.64372
1975	2522211736.30104
1976	2865823701.8849
1977	3047764737.91777
1978	3003161422.32356
1979	3315360389.90145
1980	3171943208.35413
1981	3219801623.77551
1982	2982230716.74934
1983	3036533373.70055
1984	3027818184.15639
1985	3642060605.84473
1986	3740127490.2144
1987	3734922568.38203
1988	4010922927.40697
1989	4178474744.85538
1990	4073912797.44007
1991	4552402157.86377
1992	4405875697.20066
1993	4545637483.9988
1994	4717459583.09197
1995	4760908442.4543
1996	5096827925.44063
1997	5342954986.49485
1998	5747505780.22185
1999	6075167846.2737
2000	6071472019.62682
2001	7005036095.98509
2002	7222634110.29424
2003	7881269147.98058
2004	8004216841.12223
2005	8527273414.25
2006	8924830836.57373
2007	9236630227.00142
2008	9677529938.79202
2009	10130347922.7255
2010	10678749467.4697
2011	11024767958.1827
2012	10932581178.5301
2013	11184422457.8225
2014	11972181170.8491
2015	12686032241.3252
2016	13421822110.6944
2017	14133178682.5182