Year	current US$
1960	28139437.2112558
1961	30099398.0120398
1962	33599328.0134397
1963	35419291.6141677
1964	32199356.0128797
1965	36259274.8145037
1966	42699146.0170797
1967	45981772.9908865
1968	42601704.0681627
1969	43921756.8702748
1970	47521900.876035
1971	54158141.77398
1972	56387225.5489022
1973	59440986.2077383
1974	78102710.4136947
1975	86478351.4702477
1976	94523548.7404162
1977	109203677.040647
1978	159061277.705345
1979	200758966.825805
1980	238763699.051841
1981	221154920.138501
1982	206537186.167693
1983	200800136.193395
1984	189613697.467101
1985	200104705.950788
1986	233087958.734082
1987	226015303.119482
1988	216803966.735642
1989	259757202.391738
1990	283227674.154421
1991	264616701.744373
1992	253455166.097744
1993	269805578.268375
1994	372911038.871847
1995	292772299.901202
1996	318910330.861939
1997	466605417.107552
1998	257049384.186118
1999	238790274.473157
2000	254165567.195913
2001	271359028.661737
2002	367304981.658327
2003	301563729.378864
2004	328128977.54924
2005	394392286.892666
2006	455539054.579141
2007	487355169.755347
2008	703863666.866634
2009	987256219.411208
2010	990457151.362878
2011	1072863391.16573
2012	867192122.630527
2013	903289257.652083
2014	758262167.336086
2015	885844472.982499
2016	738203483.819751
2017	861910181.473354