Quarter	National Currency Units per US Dollar
1991-01-01	27.8769393298877
1991-04-01	30.3114369710286
1991-07-01	30.5088384141138
1991-10-01	29.2006319480161
1992-01-01	28.7673334555192
1992-04-01	28.7739378774937
1992-07-01	27.3477249971200
1992-10-01	28.1674392387350
1993-01-01	28.9979521474976
1993-04-01	28.7375397455125
1993-07-01	29.4409529396982
1993-10-01	29.4400651295980
1994-01-01	29.9283506735018
1994-04-01	29.2437786824776
1994-07-01	28.0918330665469
1994-10-01	27.8773572294227
1995-01-01	27.1271304682152
1995-04-01	26.0763219683591
1995-07-01	26.5255691976146
1995-10-01	26.4313754487836
1996-01-01	27.0998607418066
1996-04-01	27.6712166226099
1996-07-01	26.7376422118710
1996-10-01	27.0868333333333
1997-01-01	28.3116522366522
1997-04-01	31.1059841269841
1997-07-01	33.7994851621808
1997-10-01	33.6013852021358
1998-01-01	34.6193347763348
1998-04-01	33.2017272727273
1998-07-01	31.6031576635925
1998-10-01	29.6987445887446
1999-01-01	33.0745634057971
1999-04-01	35.5574090909091
1999-07-01	34.7357575757576
1999-10-01	34.9857142857143
2000-01-01	36.2263367839889
2000-04-01	38.8947740447958
2000-07-01	39.2079040717736
2000-10-01	40.2173787878788
2001-01-01	37.6718939393939
2001-04-01	39.2557739820566
2001-07-01	38.1998293807642
2001-10-01	36.9860130288391
2002-01-01	36.1803246753247
2002-04-01	33.1602332015810
2002-07-01	30.7327191166322
2002-10-01	30.8579394137518
2003-01-01	29.4765317460317
2003-04-01	27.7626695526696
2003-07-01	28.5869248384466
2003-10-01	27.0069440993789
2004-01-01	26.2442832988268
2004-04-01	26.5940331890332
2004-07-01	25.8613636363636
2004-10-01	24.0786310308050
2005-01-01	22.9042084195997
2005-04-01	23.9259812409812
2005-07-01	24.3436338540686
2005-10-01	24.6443744588745
2006-01-01	23.7718413043478
2006-04-01	22.5948940052701
2006-07-01	22.2440917874396
2006-10-01	21.7291984126984
2007-01-01	21.3913637022398
2007-04-01	20.9659116632160
2007-07-01	20.3138157444005
2007-10-01	18.4847718708827
2008-01-01	17.0576563146998
2008-04-01	15.8920829725830
2008-07-01	16.0717580776712
2008-10-01	19.2899760869565
2009-01-01	21.2280969696970
2009-04-01	19.5461082251083
2009-07-01	17.8767938703808
2009-10-01	17.5507410126106
2010-01-01	18.6785234644582
2010-04-01	20.1262467532468
2010-07-01	19.2628939393939
2010-10-01	18.2503622247318
2011-01-01	17.8067252587992
2011-04-01	16.8763499278499
2011-07-01	17.2590053955706
2011-10-01	18.7468246753247
2012-01-01	19.1036147186147
2012-04-01	19.6693160800552
2012-07-01	20.0127233201581
2012-10-01	19.3675617667357
2013-01-01	19.3459868184955
2013-04-01	19.7569021645022
2013-07-01	19.5190411882803
2013-10-01	19.6199805194805
2014-01-01	20.0315360938578
2014-04-01	20.0155851370851
2014-07-01	20.8542034318339
2014-10-01	22.1297681159420
2015-01-01	24.5173333333333
2015-04-01	24.7844978354978
2015-07-01	24.3495051132443
2015-10-01	24.7205874270657
2016-01-01	24.5426549344376
2016-04-01	23.9435606060606
2016-07-01	24.2096778028734
2016-10-01	25.0665057720058
2017-01-01	25.3795627799736
2017-04-01	24.1603109354414
2017-07-01	22.2176611456177
2017-10-01	21.7843441558442
2018-01-01	20.6694509881423
2018-04-01	21.4727156659765
2018-07-01	22.1139190382082