Year	US Dollar per National Currency Units
1960-01-01	2.62467191690393000
1961-01-01	2.32234092043051000
1962-01-01	2.32234092043051000
1963-01-01	2.32234092043051000
1964-01-01	2.32234092043051000
1965-01-01	2.32234092043051000
1966-01-01	2.32234092043051000
1967-01-01	1.75223409905673000
1968-01-01	1.13507378016516000
1969-01-01	1.13507378016516000
1970-01-01	1.13507378016516000
1971-01-01	1.14390299739830000
1972-01-01	1.02145045998403000
1973-01-01	1.19047619085018000
1974-01-01	0.84388185667264100
1975-01-01	0.58548009377220900
1976-01-01	0.52714812870972400
1977-01-01	0.46926325676291400
1978-01-01	0.31436655144929900
1979-01-01	0.25322866552535100
1980-01-01	0.16028209651551200
1981-01-01	0.12235409275937300
1982-01-01	0.06015037593984960
1983-01-01	0.03487966515643110
1984-01-01	0.02466395363176720
1985-01-01	0.02377555872563010
1986-01-01	0.02485089463220680
1987-01-01	0.02804262478968030
1988-01-01	0.02163565556036350
1989-01-01	0.01634788294915810
1990-01-01	0.01805380032496840
1991-01-01	0.01797914419273640
1992-01-01	0.01564455569461830
1993-01-01	0.01374948439433520
1994-01-01	0.01464128843338210
1995-01-01	0.01533036946190400
1996-01-01	0.01494991777545220
1997-01-01	0.01385425325574950
1998-01-01	0.01442585112521640
1999-01-01	0.01378359751895240
2000-01-01	0.01180637544273910
2001-01-01	0.00971345313258863
2002-01-01	0.01241002730206010
2003-01-01	0.01408649105507820
2004-01-01	0.01638269986893840
2005-01-01	0.01587805652588120
2006-01-01	0.01395478649176670
2007-01-01	0.01616814874696850
2008-01-01	0.00829324929507381
2009-01-01	0.00800640512409928
2010-01-01	0.00869187309865276
2011-01-01	0.00814929508597506
2012-01-01	0.00775253895650826
2013-01-01	0.00865426222414539
2014-01-01	0.00788022064617809
2015-01-01	0.00771664480283973
2016-01-01	0.00886367665307570
2017-01-01	0.00957670944263551