Year	current US$
1960	74000000
1961	91000000
1962	85000000
1963	84000000
1964	99000000
1965	108000000
1966	100000000
1967	90000000
1968	90000000
1969	112000000
1970	116000000
1971	113000000
1972	119000000
1973	155000000
1974	222000000
1975	185000000
1976	153000000
1977	181000000
1978	279000000
1979	316000000
1980	427000000
1981	328000000
1982	298000000
1983	160000000
1984	157000000
1985	151000000
1986	132000000
1987	137000000
1988	156000000
1989	183000000
1990	149000000
1991	163000000
1992	146000000
1993	147000000
1994	150000000
1995	133000000
1996	211000000
1997	93000000
1998	95000000
1999	81000000
2000	149000000
2001	182000000
2002	264000000
2003	303000000
2004	286000000
2005	345000000
2006	389000000
2007	445000000
2008	534000000
2009	520000000
2010	770000000
2011	1717000000
2012	1604000000
2013	1780000000
2014	1568000000
2015	1530000000
2016	1068000000
2017	1301000000
2018	1354000000
2019	1502000000
2020	2146000000
2021	1803000000
2022	1966000000
2023	2154000000