Year	current US$
1960	113000000
1961	110000000
1962	167000000
1963	189000000
1964	176000000
1965	169000000
1966	173000000
1967	155000000
1968	168000000
1969	207000000
1970	203000000
1971	195000000
1972	287000000
1973	351000000
1974	782000000
1975	930000000
1976	1074000000
1977	1070000000
1978	1060000000
1979	1644000000
1980	2108000000
1981	2103000000
1982	2026000000
1983	1923000000
1984	1853000000
1985	1640000000
1986	1325000000
1987	1344000000
1988	1336000000
1989	2986000000
1990	4212000000
1991	3429000000
1992	3093000000
1993	3146000000
1994	3047000000
1995	3563000000
1996	3999000000
1997	3916000000
1998	2890000000
1999	3464000000
2000	4634000000
2001	5248000000
2002	6536000000
2003	5731000000
2004	7378000000
2005	8708000000
2006	10919000000
2007	11546000000
2008	15410000000
2009	10855000000
2010	12796000000
2011	10513000000
2012	3059000000
2013	1709000000
2014	1162000000
2015	2357000000
2016	2377000000
2017	2555000000
2018	2819000000
2019	2730000000
2020	4146000000
2021	3914000000
2022	4356000000
2023	5470000000