Year	current US$
1960	910000000
1961	920000000
1962	998000000
1963	1043000000
1964	1047000000
1965	1096000000
1966	1104000000
1967	1086000000
1968	1160000000
1969	1178000000
1970	1401000000
1971	1447000000
1972	1611000000
1973	2450000000
1974	4114000000
1975	3566000000
1976	3824000000
1977	4542000000
1978	5909000000
1979	7849000000
1980	10779000000
1981	11550000000
1982	12418000000
1983	13262000000
1984	14051000000
1985	12253000000
1986	10806000000
1987	12681000000
1988	16507000000
1989	22480000000
1990	29258000000
1991	36649000000
1992	39856000000
1993	45650000000
1994	59600000000
1995	77691000000
1996	78418000000
1997	79029000000
1998	58272000000
1999	65389000000
2000	81963000000
2001	73744000000
2002	79761000000
2003	83299000000
2004	105166000000
2005	114324000000
2006	130441000000
2007	146170000000
2008	156348000000
2009	123757000000
2010	164622000000
2011	187473000000
2012	196393000000
2013	205897000000
2014	208851000000
2015	175971000000
2016	168684000000
2017	195417000000
2018	217602000000
2019	204998000000
2020	190860000000
2021	238240000000
2022	293797000000
2023	265755000000