Year	US Dollar per National Currency Units
1960-01-01	0.58453848492
1961-01-01	0.61214215638
1962-01-01	0.61214215638
1963-01-01	0.61214215638
1964-01-01	0.61350404916
1965-01-01	0.61027781772
1966-01-01	0.60977096442
1967-01-01	0.61282310277
1968-01-01	0.61112404236
1969-01-01	0.60808732998
1970-01-01	0.61265121339
1971-01-01	0.67637809917
1972-01-01	0.68300245143
1973-01-01	0.78021250695
1974-01-01	0.87919875273
1975-01-01	0.81968095305
1976-01-01	0.89690997000
1977-01-01	0.96653839116
1978-01-01	1.11920260512
1979-01-01	1.15650039687
1980-01-01	1.03484899374
1981-01-01	0.89273173584
1982-01-01	0.83966860275
1983-01-01	0.71911023978
1984-01-01	0.62085121830
1985-01-01	0.79498838250
1986-01-01	1.00534131684
1987-01-01	1.23978080148
1988-01-01	1.10213046375
1989-01-01	1.15046223147
1990-01-01	1.30397046636
1991-01-01	1.28841888489
1992-01-01	1.21476869298
1993-01-01	1.13540648475
1994-01-01	1.27007740656
1995-01-01	1.37354159106
1996-01-01	1.26388498146
1997-01-01	1.09246058427
1998-01-01	1.16672561127
1999-01-01	1.00460000000
2000-01-01	0.93050000000
2001-01-01	0.88130000000
2002-01-01	1.04870000000
2003-01-01	1.26300000000
2004-01-01	1.36210000000
2005-01-01	1.17970000000
2006-01-01	1.31700000000
2007-01-01	1.47210000000
2008-01-01	1.39170000000
2009-01-01	1.44060000000
2010-01-01	1.33620000000
2011-01-01	1.29390000000
2012-01-01	1.31940000000
2013-01-01	1.37910000000
2014-01-01	1.21410000000
2015-01-01	1.08870000000
2016-01-01	1.05410000000
2017-01-01	1.19930000000