Year	US Dollar per National Currency Units
1960-01-01	0.46891219833
1961-01-01	0.48938582677
1962-01-01	0.48920197875
1963-01-01	0.49200859480
1964-01-01	0.49178563018
1965-01-01	0.48827295950
1966-01-01	0.49174846941
1967-01-01	0.48908071729
1968-01-01	0.48901813073
1969-01-01	0.53004948830
1970-01-01	0.53613798709
1971-01-01	0.59838814433
1972-01-01	0.61091132382
1973-01-01	0.72357691097
1974-01-01	0.81171638992
1975-01-01	0.74584599135
1976-01-01	0.82786372240
1977-01-01	0.92913464397
1978-01-01	1.06992897818
1979-01-01	1.12955832322
1980-01-01	0.99838276095
1981-01-01	0.86740669334
1982-01-01	0.82298783821
1983-01-01	0.71805169122
1984-01-01	0.62129286946
1985-01-01	0.79463221487
1986-01-01	1.00774336333
1987-01-01	1.23669282313
1988-01-01	1.09859557849
1989-01-01	1.15197995834
1990-01-01	1.30912307552
1991-01-01	1.29012609873
1992-01-01	1.21179119557
1993-01-01	1.13296146742
1994-01-01	1.26280315363
1995-01-01	1.36437331719
1996-01-01	1.25793118110
1997-01-01	1.09136291915
1998-01-01	1.16905631007
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