Year	current US$
1981	60309950353.30989
1982	56844562119.24184
1983	49135884553.8323
1984	47594655244.104225
1985	48502163279.71884
1986	50278159906.779175
1987	57761051206.25001
1988	63427497455.157104
1989	62570184031.983604
1990	72533316493.84842
1991	81096142896.67323
1992	59311336476.038376
1993	61061014489.226036
1994	63144073927.13105
1995	85134208482.32979
1996	100439998601.85481
1997	109671738378.64793
1998	115006136033.26328
1999	65438035677.77058
2000	65448429342.810555
2001	66775026434.846695
2002	87349396920.38669
2003	96271511569.02448
2004	104795404880.36098
2005	123236882487.46579
2006	147063623422.81213
2007	176227169783.45157
2008	216158145584.07013
2009	210388519500.47375
2010	225536875741.90866
2011	236270550520.6183
2012	254258063976.54346
2013	271221926542.9936
2014	289238219516.88086
2015	271356671049.26672
2016	249957344907.42914
2017	258618062626.3563
2018	277890408513.62366
2019	297244823233.0137
2020	311934250090.8923
2021	328133283958.75757
2022	356209424154.2998
2023	350110213722.2594