Year	current US$
1960	702000000
1961	714000000
1962	701000000
1963	804000000
1964	885000000
1965	1134000000
1966	1223000000
1967	1186000000
1968	1393000000
1969	1594000000
1970	1958000000
1971	2098000000
1972	2348000000
1973	3477000000
1974	4385000000
1975	5357000000
1976	6059000000
1977	6853000000
1978	7829000000
1979	9614000000
1980	10548000000
1981	8810000000
1982	10026000000
1983	9500000000
1984	9435000000
1985	10134000000
1986	11350000000
1987	13168000000
1988	12323000000
1989	16151000000
1990	19777000000
1991	21580000000
1992	23220000000
1993	22013000000
1994	21507000000
1995	25898000000
1996	28238000000
1997	26919000000
1998	30293000000
1999	30529000000
2000	33480000000
2001	33019000000
2002	31570000000
2003	44852000000
2004	52760000000
2005	57729000000
2006	67296000000
2007	84853000000
2008	96617000000
2009	74131000000
2010	65907000000
2011	66705000000
2012	61686000000
2013	60859000000
2014	61983000000
2015	46786000000
2016	46809000000
2017	53495000000
2018	63877000000
2019	62384000000
2020	55947000000
2021	77105000000
2022	98005000000
2023	88617000000