Year	current US$
1960	90000000
1961	29000000
1962	49000000
1963	42000000
1964	84000000
1965	54000000
1966	63000000
1967	102000000
1968	75000000
1969	51000000
1970	74080000
1971	57132023.2431812
1972	51504587.1619397
1973	259601785.436518
1974	251844654.534802
1975	193916016.970939
1976	239585179.704645
1977	430727953.001224
1978	491669897.614151
1979	529461066.249241
1980	1046000000
1981	716202621.258704
1982	698132372.89459
1983	771099670.242475
1984	736205844.009651
1985	792098857.644991
1986	829012231.967023
1987	1378312105.43489
1988	1263430622.65344
1989	1520131416.40602
1990	2683611742.61285
1991	5325330300.81964
1992	10809756747.8378
1993	12904091827.095
1994	13480782194.6765
1995	16181222673.9485
1996	17398343008.3746
1997	18664757639.4586
1998	18123914818.7521
1999	14484069531.4655
2000	13117578467.624
2001	12925786040.4969
2002	13242410675.248
2003	13588731809.1242
2004	14273201918.8958
2005	20609055555.5556
2006	24461557537.3543
2007	30187705601.3476
2008	32216142798.3926
2009	32252965766.342
2010	33611735634.5559
2011	14915680110.4777
2012	11627543554.7728
2013	13608097326.4074
2014	11995212051.7397
2015	13282027325.7756
2016	20858154705.9678
2017	33213917118.8055
2018	38609411065.1377
2019	40685367785.5569
2020	34094946983.7178
2021	35089750384.1185
2022	24823644492.5027
2023	24695657741.4334