Year	current US$
1960	17169816322.58932
1961	17965628153.783985
1962	17237223898.682926
1963	19303718843.40333
1964	21771640995.009544
1965	23727466784.949406
1966	25969020210.868137
1967	29138182370.49291
1968	32218809206.29324
1969	36245154273.854614
1970	43222341441.1555
1971	46546440417.473045
1972	54096088939.95695
1973	83886213240.42981
1974	132332138787.22717
1975	127428489147.22363
1976	142537847024.4442
1977	160129212218.4249
1978	191284591455.5996
1979	253841840320.1421
1980	325414600966.3981
1981	350184011750.9369
1982	334592681834.0016
1983	330804171785.51196
1984	361824724216.3569
1985	360446811290.63837
1986	366929106085.7033
1987	448097883841.44476
1988	574255468588.7461
1989	653803042885.3167
1990	722330273184.645
1991	793423747910.0221
1992	858464287439.4559
1993	943337444223.3002
1994	1100365590483.4133
1995	1343051078731.8953
1996	1409084176713.1355
1997	1426216093799.7283
1998	1179851764411.3298
1999	1290989175161.3003
2000	1596814099776.6184
2001	1479236216460.057
2002	1572328501324.9724
2003	1869589467854.384
2004	2344967104547.915
2005	2692069331514.3066
2006	3091853940703.3594
2007	3519059912868.428
2008	4164490606474.1
2009	3347202568878.6084
2010	4419976256450.703
2011	5385632900774.764
2012	5614132436319.208
2013	5761695365332.701
2014	5743290000000
2015	4935619000000
2016	4719038000000
2017	5402258000000
2018	6072236000000
2019	5857400000000
2020	5577260000000
2021	7135074000000
2022	7725539000000
2023	7096376000000