Quarter	National Currency
1981-01-01	2.00356052899288
1981-04-01	2.37421922685656
1981-07-01	2.75489572736521
1981-10-01	2.60462868769074
1982-01-01	2.35418362156663
1982-04-01	2.71482451678535
1982-07-01	3.09550101729400
1982-10-01	3.10551881993896
1983-01-01	2.66473550356053
1983-04-01	3.04541200406918
1983-07-01	3.62644455747711
1983-10-01	3.62644455747711
1984-01-01	2.98530518819939
1984-04-01	3.44612410986775
1984-07-01	3.99710325534079
1984-10-01	4.05721007121058
1985-01-01	3.40605289928789
1985-04-01	3.87688962360122
1985-07-01	4.32769074262462
1985-10-01	4.31767293997965
1986-01-01	3.93699643947101
1986-04-01	4.18744150559512
1986-07-01	4.80854526958291
1986-10-01	4.71838504577823
1987-01-01	4.13735249237030
1987-04-01	4.63824262461852
1987-07-01	5.07902594099695
1987-10-01	5.13913275686673
1988-01-01	4.32769074262462
1988-04-01	4.88868769074262
1988-07-01	5.46972024415056
1988-10-01	5.52982706002035
1989-01-01	4.71838504577823
1989-04-01	5.20925737538149
1989-07-01	5.78027212614446
1989-10-01	5.97061037639878
1990-01-01	5.17920396744659
1990-04-01	5.68009409969481
1990-07-01	6.27114445574771
1990-10-01	6.43142929806714
1991-01-01	5.54986266531028
1991-04-01	6.17096642929807
1991-07-01	6.79207019328586
1991-10-01	6.99242624618515
1992-01-01	5.99064598168871
1992-04-01	6.66183875890132
1992-07-01	7.31299593082401
1992-10-01	7.49331637843337
1993-01-01	6.43142929806714
1993-04-01	7.10262207527976
1993-07-01	7.80386826042726
1993-10-01	7.97417090539166
1994-01-01	6.78205239064090
1994-04-01	7.45324516785351
1994-07-01	8.10440233977620
1994-10-01	8.28472278738556
1995-01-01	7.06255086469990
1995-04-01	7.80386826042726
1995-07-01	8.50511444557477
1995-10-01	8.73552390640895
1996-01-01	7.44322736520854
1996-04-01	8.24465157680570
1996-07-01	8.96593336724313
1996-10-01	9.15627161749746
1997-01-01	7.78383265513734
1997-04-01	8.59527466937945
1997-07-01	9.28650305188199
1997-10-01	9.50689471007121
1998-01-01	8.05431332655137
1998-04-01	8.84571973550356
1998-07-01	9.50689471007121
1998-10-01	9.73730417090539
1999-01-01	8.26468718209563
1999-04-01	9.06611139369278
1999-07-01	9.74732197355036
1999-10-01	9.99776703967447
2000-01-01	8.46504323499491
2000-04-01	9.26646744659206
2000-07-01	9.97773143438454
2000-10-01	10.23819430315360
2001-01-01	8.74000000000000
2001-04-01	9.55000000000000
2001-07-01	10.39000000000000
2001-10-01	10.71000000000000
2002-01-01	9.44000000000000
2002-04-01	9.71000000000000
2002-07-01	10.75000000000000
2002-10-01	11.08000000000000
2003-01-01	9.78000000000000
2003-04-01	10.50000000000000
2003-07-01	11.10000000000000
2003-10-01	11.44000000000000
2004-01-01	10.26000000000000
2004-04-01	10.80000000000000
2004-07-01	11.33000000000000
2004-10-01	12.08000000000000
2005-01-01	10.78000000000000
2005-04-01	10.97000000000000
2005-07-01	11.67000000000000
2005-10-01	12.42000000000000
2006-01-01	10.89000000000000
2006-04-01	12.00000000000000
2006-07-01	12.32000000000000
2006-10-01	13.27000000000000
2007-01-01	11.44000000000000
2007-04-01	12.54000000000000
2007-07-01	12.98000000000000
2007-10-01	13.89000000000000
2008-01-01	12.50000000000000
2008-04-01	12.79000000000000
2008-07-01	13.76000000000000
2008-10-01	14.27000000000000
2009-01-01	12.80000000000000
2009-04-01	14.04000000000000
2009-07-01	14.30000000000000
2009-10-01	15.02000000000000
2010-01-01	13.17000000000000
2010-04-01	14.24000000000000
2010-07-01	14.17000000000000
2010-10-01	15.22000000000000
2011-01-01	13.19000000000000
2011-04-01	14.42000000000000
2011-07-01	14.81000000000000
2011-10-01	15.56000000000000
2012-01-01	13.39000000000000
2012-04-01	14.57000000000000
2012-07-01	14.85000000000000
2012-10-01	15.14000000000000
2013-01-01	13.63000000000000
2013-04-01	14.19000000000000
2013-07-01	14.86000000000000
2013-10-01	15.48000000000000
2014-01-01	13.39000000000000
2014-04-01	14.71000000000000
2014-07-01	14.90000000000000
2014-10-01	15.35000000000000
2015-01-01	13.67000000000000
2015-04-01	14.77000000000000
2015-07-01	14.87000000000000
2015-10-01	15.67000000000000
2016-01-01	14.13000000000000
2016-04-01	14.22000000000000
2016-07-01	14.90000000000000
2016-10-01	15.78000000000000
2017-01-01	13.50000000000000
2017-04-01	14.78000000000000
2017-07-01	14.83000000000000
2017-10-01	15.93000000000000
2018-01-01	14.04000000000000
2018-04-01	14.47000000000000