Year	current US$
1960	183000000
1961	238000000
1962	257000000
1963	285000000
1964	274000000
1965	208000000
1966	222000000
1967	214000000
1968	258000000
1969	257000000
1970	288000000
1971	331000000
1972	320000000
1973	436000000
1974	642000000
1975	887000000
1976	980000000
1977	1081000000
1978	1194000000
1979	1109000000
1980	1576000000
1981	1553000000
1982	1282000000
1983	1354000000
1984	1147000000
1985	771000000
1986	961000000
1987	871000000
1988	1060000000
1989	1335000000
1990	619000000
1991	890000000
1992	821000000
1993	945000000
1994	1227000000
1995	1219000000
1996	1548000000
1997	1580000000
1998	1915000000
1999	1415000000
2000	1553000000
2001	1958000000
2002	2446000000
2003	2882000000
2004	4075000000
2005	6757000000
2006	8074000000
2007	8775000000
2008	9352000000
2009	9691000000
2010	10045000000
2011	9236000000
2012	9230000000
2013	9918000000
2014	9211000000
2015	9509000000
2016	8311000000
2017	9134000000
2018	7850000000
2019	9291000000
2020	9838000000
2021	9894000000
2022	11095000000
2023	7100000000