Year	current US$
1960	423000000
1961	418000000
1962	265000000
1963	360000000
1964	251000000
1965	319000000
1966	365000000
1967	419000000
1968	439000000
1969	683000000
1970	763320000
1971	942439552.948743
1972	916317572.716268
1973	848791785.255795
1974	1027733777.72385
1975	1089132799.80348
1976	2791702339.02209
1977	4872016471.72272
1978	6426350817.3537
1979	7432479364.91613
1980	6943862180.06385
1981	4692882371.82402
1982	4315146405.27743
1983	4937274460.15733
1984	5842300415.42095
1985	6420353251.3181
1986	6395732658.12875
1987	6453558243.13013
1988	4899288503.72085
1989	3858554813.78295
1990	1520972172.8244
1991	3626589137.30707
1992	5757134860.50573
1993	10199123471.808
1994	19698471269.4689
1995	17921806913.0466
1996	20170156505.5965
1997	24688314294.5037
1998	27340724583.4008
1999	32666742041.8314
2000	37902244645.7003
2001	45870471083.9043
2002	67665482492.0604
2003	98937910782.3484
2004	126593287643.343
2005	131924326287.054
2006	170737998444.448
2007	266988346673.262
2008	247418901857.103
2009	265181731677.225
2010	275276605505.686
2011	271285421552.138
2012	270586506917.185
2013	276493267092.374
2014	303454874927.27
2015	334310993025.188
2016	341145194692.363
2017	389350147912.134
2018	374425187183.508
2019	432378384523.969
2020	549086868074.865
2021	594356484008.549
2022	521419383957.61
2023	574508789079.883