Year	constant 2015 US$
1974	52853952321.48432
1975	52146526983.58465
1976	58865748958.462906
1977	64137708491.41716
1978	68130540394.536766
1979	75104602063.48776
1980	75581364426.74818
1981	73131225646.50223
1982	73331418612.3743
1983	74298760272.64473
1984	77934892030.78334
1985	79345258048.23683
1986	81915366085.34746
1987	85912387844.49783
1988	89495599462.34995
1989	92721276374.33409
1990	95656115749.30435
1991	96122873095.80498
1992	95955307913.73627
1993	98033381697.16965
1994	100889644668.00137
1995	105263144941.8379
1996	109333492114.28665
1997	113808873902.87312
1998	118635862577.51941
1999	122275815343.7568
2000	129396188896.46216
2001	132891242344.22473
2002	137000517876.73975
2003	142263904994.21362
2004	148613457539.4119
2005	155286518055.17175
2006	164332265594.17023
2007	173348536841.91577
2008	176419419542.56415
2009	170632765214.09296
2010	174782022884.58444
2011	179678321916.12534
2012	182790432460.01654
2013	185471333525.92554
2014	189833392629.10132
2015	195342695295.0269
2016	201752893731.4673
2017	210312982992.74704
2018	218163909426.12076
2019	225637089079.73358
2020	210996021397.69672
2021	225315297146.5462
2022	242632093792.12463
2023	253624843042.8309