Year	current US$
1960	242000000
1961	249000000
1962	336000000
1963	345000000
1964	431010000
1965	433010000
1966	433760000
1967	534770000
1968	506770000
1969	569770000
1970	601770000
1971	944778947.974354
1972	1290789805.14824
1973	1676321792.67184
1974	1160848964.2439
1975	398194610.297341
1976	175712911.444869
1977	365579466.503789
1978	871000000
1979	930816745.927226
1980	795320587.766651
1981	533904113.493615
1982	447280542.349708
1983	384942626.845985
1984	516345239.652756
1985	1394648506.15114
1986	1456369332.01228
1987	3326664373.16461
1988	5126788941.07198
1989	9952488290.79822
1990	14485244654.3654
1991	20628778111.545
1992	19129045100.1691
1993	15839987747.2953
1994	15513470635.895
1995	15850049541.5681
1996	15917654374.547
1997	15659973066.2536
1998	15824613587.4348
1999	8427124721.38415
2000	8908691456.79688
2001	9666596006.12279
2002	11179109382.113
2003	5875846140.40309
2004	5174071090.95777
2005	3478684168.48469
2006	2063637256.04138
2007	1257777127.09557
2008	1309396458.55858
2009	2407855170.53405
2010	3651918462.49831
2011	1974597306.67578
2012	2196024425.84073
2013	2777517384.79343
2014	4869349012.11428
2015	6366743792.0829
2016	10898641564.5767
2017	10152738423.2382
2018	9158607287.31772
2019	6271485227.51303
2020	6199281842.79081
2021	10147885418.1482
2022	9939667058.78691
2023	9871410247.80101