Year	current US$
1960	700000000
1961	880000000
1962	1016000000
1963	1104000000
1964	1262000000
1965	1163000000
1966	1310000000
1967	1670000000
1968	1738000000
1969	1880000000
1970	2117000000
1971	2278000000
1972	2827000000
1973	3738000000
1974	5555000000
1975	5769000000
1976	6583000000
1977	7579000000
1978	9638000000
1979	11789000000
1980	13200000000
1981	10980000000
1982	8320000000
1983	7640000000
1984	7560000000
1985	8400000000
1986	8080000000
1987	8310000000
1988	7640000000
1989	8435000000
1990	7600000000
1991	5793000000
1992	6260000000
1993	6522000000
1994	7109000000
1995	10278000000
1996	11435000000
1997	11280000000
1998	11821000000
1999	10417000000
2000	13148000000
2001	15568000000
2002	17854000000
2003	23983000000
2004	32691000000
2005	40518000000
2006	51160000000
2007	70314000000
2008	84053000000
2009	54324000000
2010	62109000000
2011	76480000000
2012	70207000000
2013	73481000000
2014	77748000000
2015	69824000000
2016	74560000000
2017	85486000000
2018	97747000000
2019	96544000000
2020	92132000000
2021	116203000000
2022	132468000000
2023	131912000000