Year	current US$
1960	1187000000
1961	1058000000
1962	1065000000
1963	1088000000
1964	1105000000
1965	1236000000
1966	1256000000
1967	1217000000
1968	1347000000
1969	1651000000
1970	1687000000
1971	1644000000
1972	1722000000
1973	3049000000
1974	4236000000
1975	3843000000
1976	5295000000
1977	6079000000
1978	7404000000
1979	11079000000
1980	12945000000
1981	11770000000
1982	12030000000
1983	14104000000
1984	16483000000
1985	15316000000
1986	13690000000
1987	17958000000
1988	21082000000
1989	25047000000
1990	29452000000
1991	34350000000
1992	40771000000
1993	47131000000
1994	58845000000
1995	73915000000
1996	78327000000
1997	78736000000
1998	73256000000
1999	84621000000
2000	98229000000
2001	87969000000
2002	94061000000
2003	104706000000
2004	126646000000
2005	141626000000
2006	160749000000
2007	175966000000
2008	199414000000
2009	157244000000
2010	198612000000
2011	228086000000
2012	227538000000
2013	228331000000
2014	233927000000
2015	199952000000
2016	189743000000
2017	218130000000
2018	247455000000
2019	238195000000
2020	234766000000
2021	299425000000
2022	352094000000
2023	312846000000