Year	current US$
1960	819600000
1961	891200000
1962	934301000
1963	1500818000
1964	2039839000
1965	2026311000
1966	2589595000
1967	2515361000
1968	2880689000
1969	3514033000
1970	3715914000
1971	2714472000
1972	3864018000
1973	5016574000
1974	6532503000
1975	5522420000
1976	6108115000
1977	7030048000
1978	6518948000
1979	8538724000
1980	9761781000
1981	9432832948.91
1982	8921856045.92
1983	8928565879.79
1984	8876667700.85
1985	7830011817.588001
1986	8186967559.656999
1987	8637455038.157001
1988	9052430793.88
1989	10910459635.371
1990	15405840581.689997
1991	12029454649.030003
1992	11414358181.14
1993	10790359582.669998
1994	12235478705.000002
1995	15103590011.12
1996	19478415591.480003
1997	18799891121.87
1998	13278039515.31
1999	13513970150.962002
2000	43315944290
2001	45086499288
2002	53251682726
2003	50816093611
2004	55449982450
2005	46673532247
2006	52905135780
2007	102123437562
2008	121890838725
2009	88611846087
2010	111093804041
2011	81514043542
2012	60706675058
2013	73172423110
2014	71150021368
2015	51587258291
2016	52948542876
2017	53620412137
2018	61564873477
2019	62940407817
2020	67878295903