Year	current US$
1970	178000000
1971	200000000
1972	191000000
1973	181000000
1974	211000000
1975	235000000
1976	284000000
1977	303000000
1978	377000000
1979	491000000
1980	641000000
1981	623000000
1982	647000000
1983	737000000
1984	867000000
1985	1410000000
1986	1122000000
1987	989000000
1988	948000000
1989	875000000
1990	1288000000
1991	1494000000
1992	1425000000
1993	1544000000
1994	2023000000
1995	1348000000
1996	697000000
1997	924000000
1998	808729996.9736488
1999	1123650006.1918044
2000	1205160003.4609432
2001	1285299995.7334256
2002	2192609965.937212
2003	4429679954.396565
2004	3533729969.3375845
2005	4815810025.734834
2006	5517959959.724918
2007	4914090073.360135
2008	7095350040.368738
2009	8400189921.528107
2010	8983240101.445467
2011	10009699994.906792
2012	8526300109.937793
2013	8131329959.571362
2014	7492630027.115348
2015	8112229876.026518
2016	8315540045.205508
2017	8429620030.928404
2018	8116239981.751893
2019	7965669931.963086
2020	8632260016.03157
2021	10281279995.7078
2022	9407220056.304714