Year	current US$
1960	26000000
1961	26000000
1962	27000000
1963	29000000
1964	42000000
1965	45000000
1966	47000000
1967	45000000
1968	47000000
1969	56000000
1970	65000000
1971	70000000
1972	85000000
1973	101000000
1974	119000000
1975	174000000
1976	185000000
1977	284000000
1978	450000000
1979	519000000
1980	551000000
1981	434000000
1982	393000000
1983	282000000
1984	271000000
1985	288000000
1986	312000000
1987	424000000
1988	487000000
1989	472000000
1990	581000000
1991	443000000
1992	394000000
1993	179000000
1994	222000000
1995	594000000
1996	664000000
1997	645000000
1998	588000000
1999	597000000
2000	562000000
2001	553000000
2002	591000000
2003	775000000
2004	880000000
2005	1060000000
2006	1085000000
2007	1237000000
2008	1509000000
2009	1509000000
2010	1683000000
2011	2187000000
2012	2380000000
2013	2769000000
2014	2526000000
2015	2336000000
2016	2261000000
2017	1874000000
2018	2116000000
2019	2091000000
2020	2260000000
2021	2676000000
2022	3041000000
2023	3204000000