Year	current US$
1970	239000000
1971	286000000
1972	352000000
1973	505000000
1974	640000000
1975	747000000
1976	409000000
1977	464000000
1978	572000000
1979	731000000
1980	881000000
1981	820000000
1982	946000000
1983	1030000000
1984	1201000000
1985	1673000000
1986	1302000000
1987	1172000000
1988	1094000000
1989	1044000000
1990	1491000000
1991	1614000000
1992	1513000000
1993	1811000000
1994	2317000000
1995	1518000000
1996	898000000
1997	993000000
1998	934650002.4069101
1999	1405260000.3499537
2000	1440909999.4953716
2001	1568629989.8643048
2002	2511579965.6938763
2003	4578419949.783017
2004	3797209973.5252576
2005	5156790026.6069975
2006	5803379964.534193
2007	5271600076.494743
2008	7665060033.071789
2009	9097269918.873913
2010	9511540101.72561
2011	10797589993.748823
2012	10032230121.895678
2013	10432229932.31751
2014	9879640057.206158
2015	10390709816.016266
2016	10605400064.129387
2017	11391130030.009897
2018	11136990036.968147
2019	10823309898.868204
2020	11787490069.873638
2021	14073319960.383705
2022	13153460060.102873