Year	current US$
1966	798142817.0136831
1967	751541209.5049132
1968	729874800
1969	866552933.3333334
1970	786211200
1971	869905336.4394113
1972	1111862489.7471688
1973	1621422927.5146706
1974	1761432016.9321892
1975	1786657791.2359471
1976	1915465177.8329198
1977	2321732409.3816633
1978	2842504624.088783
1979	2795918646.6451244
1980	2898076970.847602
1981	2679007215.6554456
1982	2810700998.511833
1983	2444755166.757791
1984	2750392696.444779
1985	2643793930.013967
1986	3415085650.723026
1987	3776453225.7357135
1988	3653735274.4559164
1989	3935683565.4291263
1990	4544696861.9720125
1991	4218121003.6738844
1992	4269075230.6953163
1993	3855013494.9644504
1994	4061703927.302456
1995	5276214301.013851
1996	5240001552.072016
1997	4576404118.404119
1998	3795773489.732569
1999	3454288007.797941
2000	3532455122.415905
2001	3855311313.500264
2002	3181700254.601188
2003	3513059945.0491066
2004	4078593580.4777083
2005	3029853090.7635612
2006	3296146835.272752
2007	3751358451.0535116
2008	3031099036.8960986
2009	2677831707.36257
2010	3870088859.0568223
2011	4513782094.944323
2012	5413423638.907291
2013	4473907148.324105
2014	4880004929.502177
2015	2898337401.06102
2016	3009548116.217085
2017	4333516836.067723
2018	3663222560.4565325
2019	4387674973.540515
2020	4902478419.803959
2021	4417921013.272946
2022	4693520806.980844
2023	4182421902.9789457