Year	current US$
1960	266419907.43203703
1961	246847901.2608395
1962	261519895.39204186
1963	268365892.65364295
1964	291759883.2960467
1965	306319877.472049
1966	359519856.19205755
1967	362039855.18405795
1968	396479841.4080635
1969	409639836.14406556
1970	491679803.3280787
1971	625800029.6799881
1972	605359757.8560969
1973	719305941.0454677
1974	1214639514.1441944
1975	1124851546.1870606
1976	1103363094.5800507
1977	1419913415.7290692
1978	2051910223.6232827
1979	1970754653.7541122
1980	2608236153.6171527
1981	2318209962.5774994
1982	2029695252.61334
1983	1686897646.601811
1984	1984603543.460728
1985	1849498186.9956255
1986	2163994299.9216924
1987	2104101026.0298526
1988	2306399997.7461104
1989	2495151393.3647337
1990	2685575018.065861
1991	2327744590.3021126
1992	2189413217.6182556
1993	1953010595.4633834
1994	2446514204.3591876
1995	3541999889.441601
1996	3868109121.220575
1997	4114510959.8299336
1998	4048921325.8303003
1999	3528289113.006036
2000	4030324231.890599
2001	4287364071.682507
2002	3980437856.707061
2003	4478129486.20869
2004	5290013363.006449
2005	6739990276.37266
2006	8329126840.2092705
2007	10218887779.718826
2008	12529038544.104616
2009	11505843417.106215
2010	13744246852.630575
2011	17272679878.802986
2012	17910885230.478195
2013	18299434694.931644
2014	20279300677.813164
2015	17669406544.83525
2016	16171498982.47237
2017	19080378151.030937
2018	20167352977.161045
2019	20408411705.86926
2020	17711643822.619244
2021	21847594150.215435
2022	24401490366.13284
2023	22115402035.111202