Year	current US$
1970	262000000
1971	231000000
1972	186000000
1973	139000000
1974	92000000
1975	174000000
1976	228000000
1977	111000000
1978	102000000
1979	62000000
1980	122000000
1981	216000000
1982	196000000
1983	215000000
1984	240000000
1985	319000000
1986	291000000
1987	203000000
1988	436000000
1989	379000000
1990	349000000
1991	282000000
1992	244000000
1993	166000000
1994	53000000
1995	8000000
1996	-42000000
1997	-14000000
1998	35009999.11874539
1999	173359999.80196354
2000	227779998.44960868
2001	935410016.888753
2002	560829996.6640772
2003	466350001.17309403
2004	483020003.8775809
2005	720760002.722964
2006	1686449996.568263
2007	1232020000.9811678
2008	1470890006.2646723
2009	1927760004.7774613
2010	2485769938.7334337
2011	2644500041.443853
2012	2104750002.0433226
2013	2323169955.307619
2014	2272600014.5860023
2015	2233159967.34053
2016	2301279983.468354
2017	2458709993.88583
2018	2507689991.1966176
2019	2067969972.884282
2020	2479129965.651781
2021	2442910014.299677
2022	2106820001.5500195