Year	current US$
1960	72000000
1961	71000000
1962	93000000
1963	111000000
1964	137000000
1965	160000000
1966	182000000
1967	204000000
1968	185000000
1969	177000000
1970	199000000
1971	210000000
1972	218000000
1973	327000000
1974	562000000
1975	517000000
1976	532000000
1977	762000000
1978	596000000
1979	360000000
1980	887000000
1981	999000000
1982	776000000
1983	826000000
1984	848000000
1985	964000000
1986	857000000
1987	827000000
1988	805000000
1989	615000000
1990	638000000
1991	751000000
1992	855000000
1993	744000000
1994	867000000
1995	975000000
1996	1154000000
1997	1450000000
1998	1492000000
1999	1862000000
2000	1802000000
2001	1805000000
2002	1853000000
2003	2027000000
2004	2457000000
2005	2956000000
2006	3404000000
2007	3989000000
2008	4731000000
2009	3929000000
2010	4792000000
2011	6355000000
2012	6778000000
2013	6688000000
2014	6946000000
2015	7060000000
2016	5827000000
2017	7708000000
2018	7351000000
2019	6837000000
2020	6377000000
2021	10166000000
2022	11247000000
2023	10916000000