Year	current US$
1960	384000000
1961	536000000
1962	459000000
1963	401000000
1964	372000000
1965	254529998.37324
1966	212900000.579655
1967	111850002.504885
1968	98669999.8546392
1969	87000000
1970	84000000
1971	118000000
1972	132000000
1973	75000000
1974	118000000
1975	187000000
1976	366000000
1977	582000000
1978	771000000
1979	779000000
1980	952000000
1981	1021000000
1982	1056000000
1983	1156000000
1984	1428000000
1985	1546000000
1986	1308000000
1987	1330000000
1988	1021000000
1989	1137000000
1990	2552000000
1991	3395000000
1992	1784000000
1993	1052000000
1994	1431000000
1995	837000000
1996	869000000
1997	645000000
1998	1013470006.14926
1999	1133640010.05515
2000	982450002.31266
2001	924830022.279173
2002	1315479979.06059
2003	3188809974.242
2004	4442839948.480949
2005	12317620029.9263
2006	5757899830.46055
2007	4958070093.60194
2008	4701769999.26567
2009	4082540053.36761
2010	2978939966.20178
2011	2868920047.76932
2012	2348820028.00703
2013	3509299949.31817
2014	2900409983.37418
2015	2540449961.69209
2016	2984239993.30401
2017	2914960048.1689
2018	3624390000.34332
2019	3432340056.30016
2020	3554770097.82195
2021	4414009981.87065
2022	3050439961.3142014