Year	current US$
1960	1585000000.0000002
1961	1646000000.0000002
1962	1620000000.0000002
1963	1821000000.0000002
1964	2124000000.0000002
1965	2301000000
1966	2375000000
1967	2313000000
1968	2497000000
1969	2902000000
1970	3458999999.9999995
1971	4059999999.9999995
1972	4729999999.999999
1973	6987999999.999999
1974	14401999999.999998
1975	13228999999.999998
1976	16933999999.999998
1977	19798000000
1978	18098000000
1979	27317000000
1980	38234000000
1981	28572000000
1982	22427000000
1983	20176000000
1984	22327000000
1985	23190000000
1986	15510000000
1987	18098000000
1988	17184000000
1989	22101000000
1990	27434000000.000004
1991	24685000000.000004
1992	25228000000
1993	22647000000
1994	22389000000
1995	28845000000
1996	34069000000
1997	33198000000
1998	26634000000
1999	31386000000
2000	39059000000
2001	36380000000
2002	38730000000
2003	48903000000
2004	70669000000
2005	90665000000
2006	106252000000
2007	119837000000
2008	157215000000
2009	113875000000
2010	150095000000
2011	204483000000
2012	202715000000
2013	182608000000
2014	193974000000
2015	120741000000
2016	100329000000
2017	116592000000
2018	144052000000
2019	140586000000
2020	114377000000
2021	141720000000
2022	167109000000
2023	159023000000