Year	current US$
1960	786000000
1961	901000000
1962	753000000
1963	903000000
1964	961000000
1965	1052000000
1966	1095000000
1967	955000000
1968	895000000
1969	1003000000
1970	1245000000
1971	1348000000
1972	1523000000
1973	2176000000
1974	3648000000
1975	3155000000
1976	3254000000
1977	3361000000
1978	3491000000
1979	4553000000
1980	5472000000
1981	5734000000
1982	5782000000
1983	5333000000
1984	6203000000
1985	5992000000
1986	6063000000
1987	7276000000
1988	7342000000
1989	8784000000
1990	9501000000
1991	8381000000
1992	9201000000
1993	9636000000
1994	11913000000
1995	13957000000
1996	14724000000
1997	14519000000
1998	12496000000
1999	14318000000
2000	13904000000
2001	13308000000
2002	15047000000
2003	18559000000
2004	23195000000
2005	26219000000
2006	26424000000
2007	30882000000
2008	34369000000
2009	25574000000
2010	30617000000
2011	37105000000
2012	38254000000
2013	39641000000
2014	42518000000
2015	36554000000
2016	36079000000
2017	40125000000
2018	43793000000
2019	42363000000
2020	37152000000
2021	49855000000
2022	54219000000
2023	49997000000