Year	US Dollar per National Currency Units
1960-01-01	1.1200
1961-01-01	1.1205
1962-01-01	1.1185
1963-01-01	1.1160
1964-01-01	1.1140
1965-01-01	1.1185
1966-01-01	1.1140
1967-01-01	1.1210
1968-01-01	1.1100
1969-01-01	1.1180
1970-01-01	1.1150
1971-01-01	1.1910
1972-01-01	1.2750
1973-01-01	1.4880
1974-01-01	1.3270
1975-01-01	1.2571
1976-01-01	1.0864
1977-01-01	1.1414
1978-01-01	1.1505
1979-01-01	1.1055
1980-01-01	1.1807
1981-01-01	1.1279
1982-01-01	0.9806
1983-01-01	0.9020
1984-01-01	0.8278
1985-01-01	0.6809
1986-01-01	0.6648
1987-01-01	0.7225
1988-01-01	0.8555
1989-01-01	0.7927
1990-01-01	0.7733
1991-01-01	0.7598
1992-01-01	0.6886
1993-01-01	0.6771
1994-01-01	0.7768
1995-01-01	0.7450
1996-01-01	0.7965
1997-01-01	0.6527
1998-01-01	0.6139
1999-01-01	0.6538
2000-01-01	0.5540
2001-01-01	0.5106
2002-01-01	0.5662
2003-01-01	0.7500
2004-01-01	0.7790
2005-01-01	0.7337
2006-01-01	0.7913
2007-01-01	0.8816
2008-01-01	0.6928
2009-01-01	0.8969
2010-01-01	1.0163
2011-01-01	1.0156
2012-01-01	1.0405
2013-01-01	0.8865
2014-01-01	0.8202
2015-01-01	0.7306
2016-01-01	0.7236
2017-01-01	0.7800