Year	constant 2015 US$
1960	3703690523.413883
1961	3825291937.4237714
1962	3631141883.2237787
1963	3741613676.2182517
1964	3942771269.555364
1965	4061075018.00662
1966	4104823535.4409337
1967	4831861431.314907
1968	5116653066.551117
1969	5270003162.39787
1970	5256932223.634819
1971	6574055039.138863
1972	6279895221.167046
1973	6325610609.005352
1974	6648692521.3163185
1975	8155686226.332155
1976	8534564262.2673025
1977	9369168270.669495
1978	10088144097.74866
1979	9958845817.141129
1980	10340785451.349207
1981	10000938243.69434
1982	9799403322.719107
1983	8033484078.164313
1984	8024783651.430629
1985	8650710409.461721
1986	8939396588.088615
1987	8927458174.704086
1988	8455648661.972692
1989	8207373620.678247
1990	7837200211.200056
1991	8398099853.83192
1992	8503392516.156464
1993	8521717308.745986
1994	9015957543.529476
1995	8917335441.685379
1996	8647475222.626392
1997	9327081443.747286
1998	9745200294.126791
1999	7287680418.756137
2000	8194770251.107316
2001	8311579628.311359
2002	9960056869.312433
2003	10034841322.516788
2004	9933554206.71052
2005	10977923165.21608
2006	11530039865.702988
2007	11942448038.26157
2008	13737373927.718325
2009	13443754475.036171
2010	14971025818.165762
2011	17537559252.199184
2012	19624340535.838886
2013	23433995638.82348
2014	23767084764.960377
2015	21912497000
2016	18509104932.732002
2017	20753553259.50567
2018	20491181804.95574
2019	20020085531.719055
2020	15659988766.286966
2021	17726091868.837074
2022	19235084949.80339
2023	19326606157.8213