Year	current US$
1960	624000000
1961	670000000
1962	507000000
1963	653000000
1964	666000000
1965	698000000
1966	826000000
1967	820000000
1968	858000000
1969	854000000
1970	1041000000
1971	1098000000
1972	1100000000
1973	1885000000
1974	2725000000
1975	2294000000
1976	2555000000
1977	3127000000
1978	3401000000
1979	4567000000
1980	5741000000
1981	5655000000
1982	4969000000
1983	4890000000
1984	5274000000
1985	4611000000
1986	4806000000
1987	5677000000
1988	7022000000
1989	7767000000
1990	8117000000
1991	8801000000
1992	9751000000
1993	11129000000
1994	13304000000
1995	17502000000
1996	20408000000
1997	24882000000
1998	29414000000
1999	36576000000
2000	38078000000
2001	32150000000
2002	35208000000
2003	36231000000
2004	39681000000
2005	41255000000
2006	47410000000
2007	50466000000
2008	49078000000
2009	38436000000
2010	51498000000
2011	48305000000
2012	52100000000
2013	56698000000
2014	62102000000
2015	58827000000
2016	56313000000
2017	68713000000
2018	67488000000
2019	70334000000
2020	63879000000
2021	74618000000
2022	78930000000
2023	72918000000