Year	current US$
1981	60309950353.309944
1982	56844562119.2419
1983	49135884553.83232
1984	47594655244.10428
1985	48502163279.71887
1986	50278159906.77921
1987	57761051206.250046
1988	63427497455.15712
1989	62570184031.98362
1990	72533316493.84845
1991	81096142896.67328
1992	59311336476.038414
1993	61061014489.22606
1994	63144073927.13109
1995	85134208482.32986
1996	100439998601.85493
1997	109671738378.64806
1998	115006136033.2634
1999	65438035677.770645
2000	65448429342.81061
2001	66775026434.84678
2002	87349396920.38676
2003	96271511569.02455
2004	104795404880.36104
2005	123236882487.46587
2006	147063623422.8122
2007	176227169783.45166
2008	216158145584.07025
2009	210388519500.4738
2010	225536875741.9087
2011	236270550520.61826
2012	254258063976.5435
2013	271221926542.99365
2014	289238219516.88104
2015	271356671049.26672
2016	249957344907.42914
2017	258618062626.35626
2018	277890408513.62366
2019	297244823233.0137
2020	311934250090.89215
2021	328133283958.7576
2022	356209424154.2998
2023	350110213722.2595