Year	current US$
1960	1079000000
1961	964000000
1962	1216000000
1963	1365000000
1964	1410000000
1965	1493000000
1966	1593000000
1967	1465000000
1968	1368000000
1969	1612000000
1970	1773000000
1971	1740000000
1972	1941000000
1973	3266000000
1974	3931000000
1975	2961000000
1976	3916000000
1977	5652000000
1978	6400000000
1979	7810000000
1980	8021000000
1981	9143000000
1982	7625000000
1983	7836000000
1984	8107000000
1985	8396000000
1986	6852000000
1987	6360000000
1988	9135000000
1989	9579000000
1990	12353000000
1991	11978000000
1992	12235000000
1993	13118000000
1994	15659000000
1995	20967000000
1996	23811000000
1997	26370000000
1998	26441000000
1999	23333000000
2000	26341000000
2001	26543000000
2002	25650000000
2003	29566000000
2004	34576000000
2005	40351000000
2006	46546000000
2007	55779000000
2008	70018000000
2009	55672000000
2010	68187000000
2011	84051000000
2012	79982000000
2013	75963000000
2014	68405000000
2015	56784000000
2016	57910000000
2017	58644000000
2018	61781000000
2019	65116000000
2020	54884000000
2021	77935000000
2022	88445000000
2023	66787000000