Year	US Dollar per National Currency Units
1960-01-01	11.35821975
1961-01-01	11.35821975
1962-01-01	11.35821975
1963-01-01	11.35821975
1964-01-01	11.35821975
1965-01-01	11.35821975
1966-01-01	11.35821975
1967-01-01	11.35821975
1968-01-01	11.35821975
1969-01-01	11.35821975
1970-01-01	11.35821975
1971-01-01	11.35821975
1972-01-01	11.35821975
1973-01-01	11.47305250
1974-01-01	11.35821975
1975-01-01	9.55803750
1976-01-01	9.20161300
1977-01-01	9.59688300
1978-01-01	9.46399050
1979-01-01	8.90073075
1980-01-01	7.32237675
1981-01-01	5.91269400
1982-01-01	4.82842750
1983-01-01	3.45350125
1984-01-01	2.65205725
1985-01-01	2.30619600
1986-01-01	2.45578525
1987-01-01	2.70589575
1988-01-01	2.30074400
1989-01-01	2.15967350
1990-01-01	2.16171800
1991-01-01	1.94397875
1992-01-01	1.58789500
1993-01-01	1.36742975
1994-01-01	1.41922375
1995-01-01	1.43762425
1996-01-01	1.37935600
1997-01-01	1.20557350
1998-01-01	1.20591425
1999-01-01	1.03758375
2000-01-01	0.93195125
2001-01-01	0.88130000
2002-01-01	1.04870000
2003-01-01	1.26300000
2004-01-01	1.36210000
2005-01-01	1.17970000
2006-01-01	1.31700000
2007-01-01	1.47210000
2008-01-01	1.39170000
2009-01-01	1.44060000
2010-01-01	1.33620000
2011-01-01	1.29390000
2012-01-01	1.31940000
2013-01-01	1.37910000
2014-01-01	1.21410000
2015-01-01	1.08870000
2016-01-01	1.05410000
2017-01-01	1.19930000