Year	current US$
1977	40402676991.949066
1978	48935582156.22942
1979	63476711327.66894
1980	65075013995.131
1981	75996951252.67169
1982	69223180948.65562
1983	68379121567.92204
1984	64489980470.286224
1985	62263874767.75207
1986	50579707650.09049
1987	49782666922.84519
1988	49399849896.23506
1989	53265232434.24743
1990	64187895844.30722
1991	73379268411.20741
1992	78459865058.05563
1993	79429768960.3256
1994	69122012085.32811
1995	67605477257.2473
1996	79175864045.18916
1997	85081108822.05782
1998	75797341240.89656
1999	77688235993.6466
2000	86098601039.71358
2001	79260777181.7261
2002	79307118107.03973
2003	91005134102.43073
2004	115759484081.9172
2005	142130179325.97342
2006	169440882496.55115
2007	219593645472.7892
2008	268416502577.58368
2009	254071290870.5933
2010	271911029406.44608
2011	290111702693.1719
2012	314289709296.392
2013	334960540184.68964
2014	372725519350.5515
2015	351130490871.9944
2016	346896388204.9111
2017	371128938666.25934
2018	401815233979.5229
2019	411760556093.1016
2020	308840170398.655
2021	386154134331.2277
2022	458053871936.87305
2023	502917556115.2894