Year	current US$
1960	70000000
1961	68000000
1962	68000000
1963	70000000
1964	82000000
1965	77000000
1966	70000000
1967	77000000
1968	76000000
1969	68000000
1970	76000000
1971	84000000
1972	119000000
1973	168000000
1974	309000000
1975	332000000
1976	360000000
1977	447000000
1978	500000000
1979	574000000
1980	609000000
1981	563000000
1982	464000000
1983	441000000
1984	471000000
1985	523000000
1986	676000000
1987	993000000
1988	1261000000
1989	1325000000
1990	1618000000
1991	1558000000
1992	1625000000
1993	1715000000
1994	1930000000
1995	1976000000
1996	2289000000
1997	2189000000
1998	2073000000
1999	2247000000
2000	2093000000
2001	1987000000
2002	2159000000
2003	2363000000
2004	2771000000
2005	3157000000
2006	3627000000
2007	3894000000
2008	4651000000
2009	3733000000
2010	4386000000
2011	5149000000
2012	5354000000
2013	5397000000
2014	5610000000
2015	4790000000
2016	4655000000
2017	5254000000
2018	5661000000
2019	5596000000
2020	4220000000
2021	5133000000
2022	6609000000
2023	6284000000