Year	current US$
1960	10172000000
1961	11011000000
1962	12375000000
1963	13070000000
1964	14710000000
1965	17612000000
1966	18167000000
1967	17546000000
1968	20295000000
1969	24876000000
1970	29947000000
1971	34293000000
1972	40378000000
1973	54891000000
1974	69661000000
1975	74931000000
1976	88421000000
1977	101458000000
1978	121754000000
1979	159646000000
1980	188002000000
1981	163941000000
1982	155323000000
1983	152877000000
1984	153022000000
1985	158488000000
1986	190872000000
1987	228441000000
1988	250467000000
1989	269702000000
1990	355686000000
1991	389908000000
1992	408619000000
1993	342611000000
1994	381388000000
1995	463872000000
1996	459098000000
1997	445731000000
1998	471474000000
1999	474047000000
2000	497197000000
2001	486119000000
2002	490283000000
2003	604612000000
2004	715742000000
2005	777073000000
2006	906684000000
2007	1054983000000
2008	1185067000000
2009	926347000000
2010	1054814000000
2011	1254869000000
2012	1154852000000
2013	1181233000000
2014	1207193000000
2015	1051132000000
2016	1055326000000
2017	1162907000000
2018	1284353000000
2019	1233978000000
2020	1171782000000
2021	1421512000000
2022	1582595000000
2023	1462602000000