Year	current US$
1960	1885300000
1961	2044300000
1962	2224800000
1963	2418900000
1964	2646400000
1965	2966600000
1966	3286700000
1967	3507700000
1968	4013000000
1969	4636900000
1970	5156000000
1971	5751000000
1972	6872000000
1973	9550600000
1974	11934000000
1975	12948500000
1976	14843400000
1977	17605800000
1978	23574700000
1979	29834400000
1980	29640900000
1981	27036300000
1982	26011100000
1983	25585000000
1984	25846200000
1985	27444600000
1986	37454600000
1987	45499800000
1988	50628000000
1989	51552706917
1990	63797355556
1991	61385268859
1992	65548706550
1993	62739971296
1994	70482880098
1995	81373253016
1996	79366593737
1997	75958333310
1998	78848983658
1999	80250600000
2000	80452675562
2001	81972639528
2002	91583565314
2003	104653000000
2004	122818000000
2005	130781000000
2006	147670000000
2007	171780000000
2008	200334000000
2009	172640000000
2010	195512000000
2011	234862000000
2012	312460000000
2013	357809000000
2014	311155000000
2015	289839000000
2016	302241000000
2017	299070000000
2018	309862000000
2019	313746000000
2020	314009000000