Year	current US$
1960	1269900000
1961	1402500000
1962	1213500000
1963	1406900000
1964	1430900000
1965	1595300000
1966	1741000000
1967	1654600000
1968	1881600000
1969	2310420000
1970	2738370000
1971	2902400000
1972	4003540000
1973	6198800000
1974	7949290000
1975	8663000000
1976	10097380000
1977	12137800000
1978	12649110000
1979	15239640000
1980	20127740000
1981	23326410000
1982	20165530000
1983	21851340000
1984	27005510000
1985	25638420000
1986	22401110000
1987	26213140000
1988	33764350000
1989	32639608460
1990	31388884000
1991	31592327000
1992	37017805000
1993	38766755000
1994	43661329000
1995	46557103000
1996	47716505500
1997	53906017000
1998	51156522000
1999	48313278717
2000	59642914788
2001	59002912371
2002	60354353291
2003	73666678762
2004	97672031669
2005	118469000000
2006	138350000000
2007	157047000000
2008	197942000000
2009	150582000000
2010	201915000000
2011	256038000000
2012	242138000000
2013	241690000000
2014	225100000000
2015	191134000000
2016	184558000000
2017	217772000000
2018	242363000000
2019	222200000000
2020	211261000000