Year	current US$
1960	962000000
1961	962000000
1962	1077000000
1963	1136000000
1964	1251000000
1965	1284000000
1966	1342000000
1967	1355000000
1968	1439000000
1969	1540000000
1970	1693000000
1971	2507000000
1972	2989000000
1973	3815000000
1974	10963000000
1975	9184000000
1976	9846000000
1977	9754000000
1978	10427000000
1979	18404000000
1980	19663000000
1981	16044000000
1982	10864000000
1983	11504000000
1984	11623000000
1985	10597000000
1986	7383000000
1987	8264000000
1988	7661000000
1989	11476000000
1990	7042000000
1991	1088000000
1992	6571000000
1993	10248000000
1994	11260000000
1995	12785000000
1996	14889000000
1997	14224000000
1998	9554000000
1999	12164000000
2000	19436000000
2001	16203000000
2002	15369000000
2003	20678000000
2004	28599000000
2005	44869000000
2006	56016000000
2007	62691000000
2008	87457000000
2009	54008000000
2010	69978000000
2011	102103000000
2012	118912000000
2013	115104000000
2014	102111000000
2015	54122000000
2016	46273000000
2017	55015000000
2018	71938000000
2019	64483000000
2020	40116000000
2021	63128000000
2022	99985000000
2023	85409000000