Year	constant 2015 US$
1960	8701906561.063503
1961	6609042951.739727
1962	5287234377.290814
1963	9362810848.167686
1964	10244016591.125706
1965	10794770170.387228
1966	8709417004.209352
1967	8750306456.83109
1968	9445423867.564306
1969	10181430773.012129
1970	11285441130.161448
1971	11939669090.317595
1972	14025023146.336157
1973	14229469597.054626
1974	17786836573.887543
1975	19790410795.37501
1976	21385093847.24162
1977	23715782070.454865
1978	23715782070.454865
1979	26005583424.699436
1980	28704274250.423126
1981	31233131454.48006
1982	31837066729.345993
1983	33873564797.447437
1984	35640585521.80489
1985	37885586106.48191
1986	37549113113.61309
1987	35408925638.85226
1988	32303018821.92859
1989	35909639750.42346
1990	34644321529.53831
1991	32091550956.46813
1992	33637888728.51229
1993	32788070390.610973
1994	32602680103.754807
1995	33279253835.1548
1996	32479683091.58669
1997	31778776307.20846
1998	32445063279.94901
1999	33402877462.857304
2000	35027177906.03198
2001	35867830175.89216
2002	37410146873.45554
2003	39131013629.6345
2004	41439743433.78295
2005	43345971631.73698
2006	44863080638.84777
2007	47510002396.53976
2008	50455622545.125206
2009	53937060500.73887
2010	56957535888.78028
2011	60033242826.77437
2012	64295603067.47535
2013	68217634854.59137
2014	71901387136.7393
2015	74705541235.0721
2016	76722590848.41905
2017	78487210437.93272
2018	80527877909.31895
2019	82621602734.96124
2020	78655765803.6831
2021	79914258056.54204
2022	82711257088.521
2023	81213369723.9953