Year	US Dollar per National Currency Units
1960-01-01	0.714285714796719
1961-01-01	0.713327817440386
1962-01-01	0.714602181476513
1963-01-01	0.716204118686628
1964-01-01	0.717808101697478
1965-01-01	0.714413288597545
1966-01-01	0.717746277206349
1967-01-01	0.713393972329869
1968-01-01	0.719553877114268
1969-01-01	0.714924039831939
1970-01-01	0.717231486976677
1971-01-01	0.765257318358720
1972-01-01	0.782895304024000
1973-01-01	0.671163462311597
1974-01-01	0.689631392496556
1975-01-01	0.869565218147448
1976-01-01	0.869565218147448
1977-01-01	0.869565218147448
1978-01-01	0.869565218147448
1979-01-01	0.826856293060076
1980-01-01	0.745378652910986
1981-01-01	0.956571648131406
1982-01-01	1.076310407921640
1983-01-01	1.221896383186710
1984-01-01	1.984914648670110
1985-01-01	2.557544763574280
1986-01-01	2.183406113537120
1987-01-01	1.929943066679530
1988-01-01	2.377725467817490
1989-01-01	2.536011361330900
1990-01-01	2.562525625256250
1991-01-01	2.743032696949750
1992-01-01	3.053000000000000
1993-01-01	3.397500000000000
1994-01-01	3.543500000000000
1995-01-01	3.647500000000000
1996-01-01	4.682500000000000
1997-01-01	4.867500000000000
1998-01-01	5.860000000000000
1999-01-01	6.154500000000000
2000-01-01	7.568500000000000
2001-01-01	12.126500000000000
2002-01-01	8.640000000000000
2003-01-01	6.640000000000000
2004-01-01	5.630000000000000
2005-01-01	6.325000000000000
2006-01-01	6.970000000000000
2007-01-01	6.810000000000000
2008-01-01	9.305000000000000
2009-01-01	7.380000000000000
2010-01-01	6.631600000000000
2011-01-01	8.142900000000000
2012-01-01	8.501150000000000
2013-01-01	10.489850000000000
2014-01-01	11.580950000000000
2015-01-01	15.545000000000000
2016-01-01	13.684450000000000
2017-01-01	12.335000000000000