Year	current US$
1960	18989999.7711182
1961	2200000.04768372
1962	3559999.94277954
1963	8710000.03814697
1964	2230000.01907349
1965	3000000
1966	4670000.07629395
1967	5559999.94277954
1968	24540000.915527303
1969	19450000.762939498
1970	12920000.076293899
1971	9250000
1972	22239999.7711182
1973	15779999.7329712
1974	5099999.90463257
1975	4869999.88555908
1976	6739999.771118159
1977	13819999.6948242
1978	5199999.80926514
1979	6940000.05722046
1980	8630000.11444092
1981	9649999.61853027
1982	6320000.17166138
1983	5550000.19073486
1984	5769999.98092651
1985	7719999.79019165
1986	27819999.6948242
1987	16149999.618530298
1988	34060001.373291
1989	30809999.4659424
1990	45919998.1689453
1991	41810001.373291
1992	65690002.44140631
1993	113959999.084473
1994	75010002.1362305
1995	68930000.3051758
1996	36599998.4741211
1997	37259998.3215332
1998	27520000.4577637
1999	25620000.8392334
2000	21549999.237060502
2001	16420000.076293899
2002	16209999.0844727
2003	17270000.4577637
2004	24479999.5422363
2005	18340000.1525879
2006	24600000.3814697
2007	37040000.9155273
2008	32860000.6103516
2009	50729999.5422363
2010	45909999.8474121
2011	18229999.5422363
2012	17360000.6103516
2013	36520000.4577637
2014	91569999.6948242
2015	23180000.3051758
2016	18250000
2017	41639999.3896484