Year	constant 2021 US$
1960	4281240025.26701
1961	4005609999.15004
1962	4531809997.02215
1963	4007389985.50922
1964	4085700004.04119
1965	5661820019.60278
1966	6524210052.49023
1967	7714250048.87581
1968	7816209810.91261
1969	8002090063.09509
1970	8516950013.995171
1971	9155199787.85515
1972	9440769991.87469
1973	9017450006.604189
1974	10164019938.0293
1975	7743429962.3742695
1976	6416770017.26627
1977	5659400039.34316
1978	6901419885.672629
1979	7418650094.915179
1980	7714329977.70607
1981	8504669964.4886
1982	8383050077.54639
1983	8494500056.57226
1984	8767069970.43639
1985	9071229869.37687
1986	8781500023.57364
1987	8805880116.596819
1988	9375250084.51752
1989	9838569831.319149
1990	10458310027.3013
1991	9614839994.51995
1992	11877010002.8161
1993	11166139935.8697
1994	11118030030.6454
1995	10255410154.5997
1996	9094910046.68921
1997	8463760017.57383
1998	10625599823.474901
1999	11542389887.3329
2000	10501440207.0045
2001	9972990009.30786
2002	9699370076.65634
2003	8489900113.10577
2004	7726770023.34595
2005	10373529898.6435
2006	8531520051.002501
2007	8665169972.41974
2008	8339029965.4007
2009	9611239915.37094
2010	9155270021.4386
2011	6784719940.18555
2012	8227229968.07098
2013	11195120081.9016
2014	8868570066.45203
2015	9015719944.00024
2016	8214610124.588011
2017	8666000048.16055
2018	8167589973.44971
2019	7250459940.91034
2020	12714009916.782398
2021	9819090023.04077