Year	current US$
1970	125000000
1971	163000000
1972	121000000
1973	120000000
1974	138000000
1975	154000000
1976	185000000
1977	201000000
1978	249000000
1979	334000000
1980	462000000
1981	551000000
1982	525000000
1983	618000000
1984	658000000
1985	1038000000
1986	672000000
1987	686000000
1988	645000000
1989	643000000
1990	902000000
1991	1137000000
1992	982000000
1993	1142000000
1994	1102000000
1995	773000000
1996	520000000
1997	522000000
1998	459599995.62986195
1999	690969995.5657123
2000	727169995.7307425
2001	695620001.6792864
2002	1859499979.4382613
2003	5169279922.548689
2004	6001109963.161878
2005	15161570062.963297
2006	10401719784.08657
2007	8267180141.028028
2008	9099260052.42952
2009	10073310043.975716
2010	9219180042.237045
2011	10634550042.42436
2012	9170060094.371443
2013	9029049900.248648
2014	8599839984.238153
2015	8646089876.666674
2016	8819749974.62333
2017	9359419944.047928
2018	9341690022.11094
2019	8895419940.259308
2020	9991319984.719166
2021	11022819953.471432
2022	9882080018.520355