Year	constant 2015 US$
1960	4363803903.989937
1961	4699378285.124067
1962	4754193223.828897
1963	5031804942.813244
1964	5094730265.718207
1965	5547792591.039081
1966	5940150487.090186
1967	6279947231.101098
1968	6507218691.59942
1969	6910681056.47472
1970	7354119508.809222
1971	7662803972.191628
1972	7832678180.70503
1973	8517605775.873954
1974	8856376655.843285
1975	9308541828.483704
1976	10011390935.85983
1977	10496900982.080471
1978	10290314828.2331
1979	10617789725.471516
1980	10661887709.506472
1981	10857841854.945507
1982	10445489670.751942
1983	9822869731.919285
1984	9888706831.034595
1985	10072909691.820347
1986	10248949029.20736
1987	10466370937.688145
1988	10599967303.858534
1989	10775954340.799625
1990	11088856327.053425
1991	11457637925.720364
1992	11867098851.781723
1993	12249183910.347021
1994	12611741181.230814
1995	13044808332.767393
1996	13459099145.585375
1997	14152064895.42731
1998	14868127693.983316
1999	15287606778.156034
2000	15635167642.83358
2001	15866462320.97069
2002	16220826253.89555
2003	16563461052.1832
2004	17050871236.041119
2005	17619179268.137703
2006	18317170262.02002
2007	19070893180.46792
2008	20075730911.926384
2009	20817103863.091637
2010	21619675015.503044
2011	22803503692.701637
2012	23862387733.80491
2013	25385942565.40271
2014	26807982103.36488
2015	28352112489.146164
2016	29239703358.325783
2017	30631666139.393513
2018	31986495074.13136
2019	33166096628.088005
2020	30805440454.156624
2021	32453134427.54953
2022	33563578125.588673
2023	34301566403.760723