Year	current US$
1970	293127333.238065
1971	327706210.435217
1972	402451900.82128793
1973	523554039.2032079
1974	563949254.1140337
1975	711978961.8936744
1976	735324244.6673969
1977	811191392.2242771
1978	1000555218.0320864
1979	1209870147.490988
1980	1378175524.1118622
1981	1205188647.9316258
1982	1143216456.567955
1983	1092560364.5195885
1984	1037329604.3510797
1985	1082867507.3314211
1986	1515234743.4736655
1987	1839081463.276756
1988	2000704744.9153755
1989	2010083833.1726034
1990	2481307077.1098886
1991	2480540845.332419
1992	2737049230.7044163
1993	2574494355.7335696
1994	2720332134.5362263
1995	3130309995.3084774
1996	3137886994.5220656
1997	2840195190.36905
1998	2934593467.685893
1999	2907118641.177555
2000	2654462665.268933
2001	2673723033.7123938
2002	2919647981.8147264
2003	3597089750.782763
2004	4043551488.8260303
2005	4204652898.7310276
2006	4586826512.713562
2007	5875790766.262101
2008	6502942244.9306755
2009	5474379252.341142
2010	5367561569.595484
2011	6088689808.383467
2012	5742749294.008515
2013	6555591709.885848
2014	7069353073.088819
2015	6261649890.82388
2016	6465645584.948767
2017	6431271365.083382
2018	7182444409.540691
2019	7383944044.169999
2020	6739645416.479156
2021	8626081320.506119
2022	8784002931.686646