Year	constant 2015 US$
1961	3305437007.46099
1962	4455389562.196581
1963	6007604082.484738
1964	6697477202.612807
1965	7473707478.648493
1966	6496223203.944919
1967	5375179383.736806
1968	4886560262.276626
1969	5087691245.052908
1970	5806473099.708456
1971	7186096324.07299
1972	7847306741.456795
1973	8767096562.997019
1974	8623290985.709267
1975	8795636249.849678
1976	10002914210.0738
1977	12590061426.445667
1978	13883573526.685799
1979	15953192887.070007
1980	19177808453.745667
1981	20952312690.166386
1982	21351991321.99522
1983	19610701376.308197
1984	20141637964.48094
1985	20161935586.59598
1986	21400459583.2881
1987	24432924327.27474
1988	26421476215.0904
1989	27462190658.079605
1990	29708829886.485264
1991	32509163643.010834
1992	35423533131.055435
1993	36466092812.41874
1994	41925415066.014244
1995	44982729020.105354
1996	49782809110.582756
1997	56594937124.17263
1998	52410674587.07631
1999	43848399483.60376
2000	47302193656.341934
2001	48604439884.886116
2002	46713193567.331024
2003	47420780975.8504
2004	49012606613.235794
2005	50984551355.68461
2006	54588055868.50764
2007	56313722795.96066
2008	57096226882.46827
2009	55116532138.84826
2010	59355659763.60098
2011	65427724173.28742
2012	69868597860.27446
2013	71659955273.84525
2014	71578395737.71028
2015	69301125552.29465
2016	69222272365.77502
2017	71385506819.67163
2018	72591431605.08807
2019	61749056950.69295
2020	54866686862.99589
2021	59423318503.98445
2022	55007909106.559906
2023	60938628256.79072