Year	current US$
1960	33000000
1961	38000000
1962	37000000
1963	48000000
1964	41000000
1965	61000000
1966	59000000
1967	57000000
1968	50000000
1969	49000000
1970	38000000
1971	43000000
1972	54000000
1973	70000000
1974	122000000
1975	136000000
1976	120000000
1977	107000000
1978	164000000
1979	188000000
1980	213000000
1981	224000000
1982	226000000
1983	221000000
1984	222000000
1985	201000000
1986	184000000
1987	205000000
1988	201000000
1989	197000000
1990	215000000
1991	214000000
1992	219000000
1993	211000000
1994	196000000
1995	177000000
1996	172000000
1997	176000000
1998	196000000
1999	194000000
2000	207000000
2001	196000000
2002	197000000
2003	238000000
2004	261000000
2005	277000000
2006	336000000
2007	473000000
2008	574000000
2009	451000000
2010	374000000
2011	511000000
2012	564000000
2013	719000000
2014	803000000
2015	871000000
2016	2327000000
2017	3576000000
2018	3603000000
2019	4138000000
2020	2911000000
2021	4870000000
2022	4328000000
2023	4663000000