Year	US Dollar per National Currency Units
1960-01-01	2.803799999
1961-01-01	2.808099999
1962-01-01	2.802499999
1963-01-01	2.796599999
1964-01-01	2.790099999
1965-01-01	2.802799999
1966-01-01	2.790199999
1967-01-01	2.406299999
1968-01-01	2.384399999
1969-01-01	2.400699999
1970-01-01	2.393699999
1971-01-01	2.552499999
1972-01-01	2.348099999
1973-01-01	2.323199999
1974-01-01	2.348499999
1975-01-01	2.023499999
1976-01-01	1.702399999
1977-01-01	1.905999999
1978-01-01	2.034499999
1979-01-01	2.223999999
1980-01-01	2.384999999
1981-01-01	1.907999999
1982-01-01	1.614499999
1983-01-01	1.450599999
1984-01-01	1.156499999
1985-01-01	1.444499999
1986-01-01	1.474500000
1987-01-01	1.871500000
1988-01-01	1.809500000
1989-01-01	1.605500000
1990-01-01	1.928000000
1991-01-01	1.870700000
1992-01-01	1.512000000
1993-01-01	1.481200000
1994-01-01	1.562500000
1995-01-01	1.550000000
1996-01-01	1.698000000
1997-01-01	1.653800000
1998-01-01	1.663500000
1999-01-01	1.616400000
2000-01-01	1.492200000
2001-01-01	1.450400000
2002-01-01	1.611800000
2003-01-01	1.784700000
2004-01-01	1.931400000
2005-01-01	1.721900000
2006-01-01	1.963000000
2007-01-01	2.003400000
2008-01-01	1.457800000
2009-01-01	1.619500000
2010-01-01	1.565500000
2011-01-01	1.546100000
2012-01-01	1.578000000
2013-01-01	1.646800000
2014-01-01	1.560800000
2015-01-01	1.481900000
2016-01-01	1.230200000
2017-01-01	1.351150000