Year	current US$
1960	462000000
1961	486000000
1962	468000000
1963	520000000
1964	601000000
1965	749000000
1966	796000000
1967	677000000
1968	591000000
1969	891000000
1970	1240000000
1971	1815000000
1972	2180000000
1973	3462000000
1974	9205000000
1975	7834000000
1976	10566000000
1977	11839000000
1978	9938000000
1979	17334000000
1980	25968000000
1981	17845000000
1982	12185000000
1983	10357000000
1984	11856000000
1985	12548000000
1986	5155000000
1987	7365000000
1988	6875000000
1989	10000000000
1990	13596000000
1991	12264000000
1992	11886000000
1993	9908000000
1994	9415000000
1995	12342000000
1996	16153000000
1997	15207000000
1998	9855000000
1999	13856000000
2000	20975000000
2001	18045000000
2002	17975000000
2003	24031000000
2004	38631000000
2005	50467000000
2006	58726000000
2007	66606000000
2008	86274000000
2009	56742000000
2010	84000000000
2011	116000000000
2012	114700000000
2013	90555000000
2014	103100000000
2015	50216000000
2016	33302000000
2017	44468000000
2018	60547000000
2019	62531000000
2020	35634000000
2021	46871000000
2022	63075000000
2023	57890000000