Year	constant 2021 US$
1960	17813670126.5574
1961	19299289923.586
1962	19344169950.664
1963	21232940298.4604
1964	23566700450.0479
1965	24397440098.4049
1966	23789779668.51
1967	25436760205.820198
1968	22042380047.377197
1969	20981739968.0577
1970	22826139904.9163
1971	23901689590.364697
1972	21303829901.278
1973	25082010157.585102
1974	31788879715.7183
1975	37271679558.3963
1976	34321359402.179703
1977	31577750632.1669
1978	32993180017.270096
1979	28906900095.4628
1980	33993500156.045
1981	32835330025.7921
1982	32235220200.3598
1983	29912709754.9438
1984	30895599452.9724
1985	31509629794.1208
1986	30655500040.1735
1987	28732820361.1374
1988	29814110132.0069
1989	31779289755.821198
1990	39905170013.576775
1991	40006359573.66227
1992	36391630263.16466
1993	30523219985.187023
1994	34206899986.356533
1995	26949750018.615314
1996	27926249758.83219
1997	25912839911.87812
1998	28993329986.333862
1999	28003059644.699135
2000	27227700218.200645
2001	32635120044.708263
2002	31798470043.18236
2003	29528469964.981083
2004	29977560058.593716
2005	38357229846.9543
2006	43817980018.6157
2007	34414650075.9125
2008	34980140001.297
2009	40938310092.926
2010	42813720113.7543
2011	39982849822.998
2012	42735959751.1292
2013	51635319946.2891
2014	47473969909.668
2015	49791549724.5789
2016	47632220394.1345
2017	49489469787.5977
2018	45923350189.209
2019	47774670131.6834
2020	60189680133.8196
2021	58081300460.8154