Year	current US$
1960	126000000
1961	122000000
1962	131000000
1963	136000000
1964	151000000
1965	163000000
1966	180000000
1967	202000000
1968	211000000
1969	223000000
1970	240000000
1971	315000000
1972	397000000
1973	628000000
1974	2015000000
1975	1805000000
1976	2210000000
1977	2072000000
1978	2391000000
1979	3753000000
1980	5680000000
1981	5686000000
1982	4341000000
1983	3357000000
1984	4513000000
1985	3419000000
1986	1849000000
1987	1985000000
1988	2210000000
1989	2687000000
1990	3641000000
1991	3210000000
1992	3841000000
1993	3245000000
1994	3213000000
1995	3557000000
1996	4500000000
1997	5500000000
1998	5030000000
1999	7214000000
2000	11594000000
2001	10871000000
2002	10978000000
2003	13382000000
2004	18684000000
2005	25762000000
2006	34051000000
2007	42020000000
2008	67307000000
2009	48007000000
2010	74964000000
2011	114448000000
2012	132962000000
2013	136855000000
2014	131592000000
2015	77971000000
2016	57309000000
2017	67498000000
2018	84905000000
2019	72935000000
2020	51504000000
2021	87203000000
2022	130964000000
2023	97365000000