Quarter	National Currency Units per US Dollar
1991-01-01	0.949999988079071
1991-04-01	1.039353408510720
1991-07-01	1.130264735945840
1991-10-01	1.111344638305430
1992-01-01	1.218213899733990
1992-04-01	1.367038568144750
1992-07-01	1.364481999816670
1992-10-01	1.501679388862670
1993-01-01	1.627521275313990
1993-04-01	1.691060393764860
1993-07-01	1.872231815800520
1993-10-01	2.063375282690720
1994-01-01	2.183991599041810
1994-04-01	2.250779849574680
1994-07-01	2.284782190859570
1994-10-01	2.371536511277390
1995-01-01	2.423372668412680
1995-04-01	2.375598404740130
1995-07-01	2.423190476402400
1995-10-01	2.477961659078370
1996-01-01	2.543061767470180
1996-04-01	2.669817477680390
1996-07-01	2.739036022801120
1996-10-01	2.830080745341610
1997-01-01	3.010455988455990
1997-04-01	3.175285714285720
1997-07-01	3.441303312629400
1997-10-01	3.480399694889400
1998-01-01	3.508831890331890
1998-04-01	3.437121212121210
1998-07-01	3.545692515214250
1998-10-01	3.476305916305920
1999-01-01	3.750268115942030
1999-04-01	3.958192640692640
1999-07-01	3.970757575757580
1999-10-01	4.178253968253970
2000-01-01	4.114803657694960
2000-04-01	4.371469038208170
2000-07-01	4.385298481711530
2000-10-01	4.511121212121210
2001-01-01	4.088833333333330
2001-04-01	3.992704968944100
2001-07-01	4.222720685111990
2001-10-01	4.084534475186650
2002-01-01	4.131409090909090
2002-04-01	4.045472990777340
2002-07-01	4.147496706192360
2002-10-01	4.002115070284410
2003-01-01	3.901334054834060
2003-04-01	3.835476190476190
2003-07-01	3.928243616287090
2003-10-01	3.888593167701860
2004-01-01	3.813435127674260
2004-04-01	3.890952380952380
2004-07-01	3.620151515151510
2004-10-01	3.278926218708830
2005-01-01	3.073438578329880
2005-04-01	3.279624819624820
2005-07-01	3.295117008595270
2005-10-01	3.287945165945160
2006-01-01	3.186132345191040
2006-04-01	3.141663702239790
2006-07-01	3.104381642512080
2006-10-01	2.981724386724380
2007-01-01	2.964401910408430
2007-04-01	2.818697032436160
2007-07-01	2.756814690382080
2007-10-01	2.521200197628460
2008-01-01	2.385492753623190
2008-04-01	2.181673160173160
2008-07-01	2.205143453165190
2008-10-01	2.868038405797100
2009-01-01	3.464603030303030
2009-04-01	3.258089826839830
2009-07-01	2.929557751427310
2009-10-01	2.824300865800860
2010-01-01	2.879489406487230
2010-04-01	3.160710678210680
2010-07-01	3.096521212121210
2010-10-01	2.921333176485350
2011-01-01	2.880904071773640
2011-04-01	2.748062049062050
2011-07-01	2.939965117008590
2011-10-01	3.279477489177490
2012-01-01	3.223166666666670
2012-04-01	3.317353347135960
2012-07-01	3.301607575757580
2012-10-01	3.165236840454230
2013-01-01	3.146219737750170
2013-04-01	3.214198354978360
2013-07-01	3.206683913670870
2013-10-01	3.074021359558320
2014-01-01	3.054053395445130
2014-04-01	3.038461832611830
2014-07-01	3.150750200765420
2014-10-01	3.373798043478260
2015-01-01	3.720900454545460
2015-04-01	3.700689033189030
2015-07-01	3.765176943346510
2015-10-01	3.894184917497960
2016-01-01	3.958593512767430
2016-04-01	3.870722150072150
2016-07-01	3.890155150887760
2016-10-01	4.056961038961040
2017-01-01	4.060520592885380
2017-04-01	3.837254314888010
2017-07-01	3.625549689440990
2017-10-01	3.593988311688310
2018-01-01	3.400926561264820
2018-04-01	3.574318012422360
2018-07-01	3.702364538866930