Year	current US$
1960	86000000
1961	86000000
1962	74000000
1963	69000000
1964	87000000
1965	104000000
1966	118000000
1967	130000000
1968	110000000
1969	118000000
1970	134000000
1971	135000000
1972	143000000
1973	177000000
1974	255000000
1975	344000000
1976	364000000
1977	314000000
1978	279000000
1979	318000000
1980	365000000
1981	438000000
1982	283000000
1983	231000000
1984	213000000
1985	226000000
1986	241000000
1987	265000000
1988	216000000
1989	258000000
1990	311000000
1991	307000000
1992	442000000
1993	484000000
1994	506000000
1995	527000000
1996	597000000
1997	630000000
1998	540000000
1999	480000000
2000	573000000
2001	584000000
2002	563000000
2003	576000000
2004	651000000
2005	788000000
2006	889000000
2007	1059000000
2008	1312000000
2009	1161000000
2010	1397000000
2011	1771000000
2012	1997000000
2013	1875000000
2014	1791000000
2015	1492000000
2016	1448000000
2017	1644000000
2018	2410000000
2019	4040000000
2020	2250000000
2021	4376000000
2022	3640000000
2023	6478000000