Year	current US$
1960	715000000
1961	1006000000
1962	661000000
1963	687000000
1964	869000000
1965	894000000
1966	959000000
1967	1180000000
1968	1290000000
1969	1265000000
1970	1236000000
1971	1325000000
1972	1418000000
1973	1800000000
1974	3471000000
1975	3756000000
1976	3942000000
1977	4270000000
1978	5144000000
1979	6613000000
1980	8291000000
1981	8478000000
1982	8272000000
1983	7976000000
1984	6432000000
1985	5455000000
1986	5261000000
1987	7187000000
1988	8731000000
1989	11171000000
1990	13004000000
1991	12862000000
1992	15497000000
1993	18688000000
1994	22641000000
1995	28341000000
1996	34126000000
1997	38622000000
1998	31496000000
1999	32568000000
2000	37027000000
2001	34921000000
2002	41092000000
2003	42576000000
2004	46102000000
2005	49487000000
2006	54078000000
2007	57996000000
2008	60420000000
2009	45878000000
2010	58468000000
2011	64097000000
2012	65839000000
2013	65739000000
2014	68704000000
2015	74750000000
2016	85935000000
2017	101902000000
2018	115119000000
2019	112909000000
2020	90751000000
2021	124367000000
2022	145867000000
2023	132979000000