Year	US Dollar per National Currency Units
1960-01-01	0.232288037220044
1961-01-01	0.231696014882228
1962-01-01	0.231535077617859
1963-01-01	0.231749710366570
1964-01-01	0.231749710366570
1965-01-01	0.231588698525148
1966-01-01	0.231107002595587
1967-01-01	0.231213872885830
1968-01-01	0.232450023299035
1969-01-01	0.231588698525148
1970-01-01	0.231696014882228
1971-01-01	0.255427841699982
1972-01-01	0.264970853276357
1973-01-01	0.308261405767035
1974-01-01	0.393700787556575
1975-01-01	0.381679389458656
1976-01-01	0.408246580934885
1977-01-01	0.500000000250000
1978-01-01	0.617283950998323
1979-01-01	0.632911392805640
1980-01-01	0.567054153993226
1981-01-01	0.556018904951915
1982-01-01	0.501378791928493
1983-01-01	0.458820830676220
1984-01-01	0.386847195357834
1985-01-01	0.481579581257683
1986-01-01	0.615953187557746
1987-01-01	0.782472613458529
1988-01-01	0.664893617021277
1989-01-01	0.646621403168445
1990-01-01	0.771902740254728
1991-01-01	0.737735153080044
1992-01-01	0.686813186813187
1993-01-01	0.675904021628929
1994-01-01	0.762485703393061
1995-01-01	0.869187309865276
1996-01-01	0.742721330956625
1997-01-01	0.687143544286401
1998-01-01	0.726480203414457
1999-01-01	0.625156289072268
2000-01-01	0.611060189428659
2001-01-01	0.596196267811363
2002-01-01	0.721084511104702
2003-01-01	0.808472794890452
2004-01-01	0.883704489218805
2005-01-01	0.760861294985924
2006-01-01	0.819470621978202
2007-01-01	0.888494002665482
2008-01-01	0.940114693992667
2009-01-01	0.970402717127608
2010-01-01	1.064282673478080
2011-01-01	1.062812201084070
2012-01-01	1.090988435522580
2013-01-01	1.121704991587210
2014-01-01	1.011020119300370
2015-01-01	1.007962906965020
2016-01-01	0.984251968503937
2017-01-01	1.025325540859220