Year	National Currency
1981-01-01	2.43432604272635
1982-01-01	2.81750699389624
1983-01-01	3.24075915564598
1984-01-01	3.62143565615463
1985-01-01	3.98207655137335
1986-01-01	4.41284206510682
1987-01-01	4.74843845371312
1988-01-01	5.05398143438454
1989-01-01	5.41963123092574
1990-01-01	5.89046795523906
1991-01-01	6.37633138351984
1992-01-01	6.86469926246185
1993-01-01	7.32802263479146
1994-01-01	7.65610567141404
1995-01-01	8.02676436927772
1996-01-01	8.45252098168871
1997-01-01	8.79312627161750
1998-01-01	9.03605798575789
1999-01-01	9.26897189725331
2000-01-01	9.48685910478128
2001-01-01	9.84750000000000
2002-01-01	10.24500000000000
2003-01-01	10.70500000000000
2004-01-01	11.11750000000000
2005-01-01	11.46000000000000
2006-01-01	12.12000000000000
2007-01-01	12.71250000000000
2008-01-01	13.33000000000000
2009-01-01	14.04000000000000
2010-01-01	14.20000000000000
2011-01-01	14.49500000000000
2012-01-01	14.48750000000000
2013-01-01	14.54000000000000
2014-01-01	14.58750000000000
2015-01-01	14.74500000000000
2016-01-01	14.75750000000000
2017-01-01	14.76000000000000