Year	current US$
1970	167000000
1971	222000000
1972	293000000
1973	454000000
1974	598000000
1975	660000000
1976	314000000
1977	336000000
1978	461000000
1979	532000000
1980	691000000
1981	699000000
1982	782000000
1983	866000000
1984	987000000
1985	1419000000
1986	1055000000
1987	975000000
1988	889000000
1989	865000000
1990	1091000000
1991	1009000000
1992	1155000000
1993	1423000000
1994	1963000000
1995	1261000000
1996	599000000
1997	727000000
1998	628309996.502474
1999	1033069996.5227395
2000	1042360004.3132899
2001	985279997.3692746
2002	2078769963.4563186
2003	4230349952.5133567
2004	3423819964.064286
2005	4645300024.15367
2006	5303769965.235144
2007	4797440076.483419
2008	7000580042.0306635
2009	8009019927.743828
2010	8916900096.375498
2011	10063030007.038275
2012	9122870114.907629
2013	8838309959.888458
2014	8633110034.942629
2015	9116749849.997469
2016	9323600035.924469
2017	10004550019.998104
2018	9629929995.339367
2019	9654489888.444544
2020	10290510057.814425
2021	12280059978.632261
2022	11689370049.281052