Quarter	National Currency Units per US Dollar
1991-01-01	70.4440836533495
1991-04-01	75.9114878210940
1991-07-01	76.3329785049796
1991-10-01	76.3885661828278
1992-01-01	78.1237118576512
1992-04-01	79.2458728388446
1992-07-01	77.1122808029813
1992-10-01	81.4758433035576
1993-01-01	85.5114553500242
1993-04-01	88.5539178724413
1993-07-01	94.4221214525628
1993-10-01	99.1496831548207
1994-01-01	102.6847539750360
1994-04-01	102.8551445233020
1994-07-01	105.5461459562820
1994-10-01	109.3980637868250
1995-01-01	113.2377722537880
1995-04-01	123.2118403551440
1995-07-01	130.2056315062040
1995-10-01	136.2260538128570
1996-01-01	144.1218184511040
1996-04-01	151.1563655187210
1996-07-01	154.5063062558880
1996-10-01	160.6516287094550
1997-01-01	171.7940476190480
1997-04-01	181.9394285714280
1997-07-01	195.0326245686680
1997-10-01	197.7484485125860
1998-01-01	207.9936544011540
1998-04-01	212.5875757575760
1998-07-01	219.6555116381200
1998-10-01	216.8077994227990
1999-01-01	223.8709782608700
1999-04-01	236.9686587301590
1999-07-01	241.3015151515150
1999-10-01	246.1115873015870
2000-01-01	259.1574751552800
2000-04-01	277.2417700922260
2000-07-01	288.7066373360940
2000-10-01	304.0387424242430
2001-01-01	287.7678484848490
2001-04-01	294.9047694962040
2001-07-01	282.7085296442690
2001-10-01	280.5845191040840
2002-01-01	278.2197972582970
2002-04-01	264.6491884057970
2002-07-01	249.2012321977540
2002-10-01	239.4660208492240
2003-01-01	227.2837337662340
2003-04-01	220.7168037518040
2003-07-01	230.6129663090530
2003-10-01	218.5754799861980
2004-01-01	207.8986808143550
2004-04-01	208.9417532467530
2004-07-01	203.5350000000000
2004-10-01	190.0620013802620
2005-01-01	186.9217481021400
2005-04-01	198.2078427128430
2005-07-01	201.2912278060100
2005-10-01	211.6863275613280
2006-01-01	211.6353972332020
2006-04-01	212.3924011857710
2006-07-01	216.1130434782610
2006-10-01	201.4655194805200
2007-01-01	192.4270046113310
2007-04-01	184.1583367839890
2007-07-01	183.2492621870880
2007-10-01	174.5441600790510
2008-01-01	173.0991863354040
2008-04-01	158.7495389610390
2008-07-01	157.4940421921080
2008-10-01	200.5151000000000
2009-01-01	226.2985454545450
2009-04-01	209.2865303030300
2009-07-01	189.3663451283020
2009-10-01	183.2972241043980
2010-01-01	193.9275593512770
2010-04-01	216.0849206349210
2010-07-01	218.0527272727270
2010-10-01	202.9915339732730
2011-01-01	199.0700693581780
2011-04-01	184.8588744588740
2011-07-01	194.6159275989710
2011-10-01	225.0823448773450
2012-01-01	226.0690981240980
2012-04-01	228.9583160800550
2012-07-01	225.9516054018450
2012-10-01	218.3122300646210
2013-01-01	224.4910155279500
2013-04-01	226.2464567099570
2013-07-01	224.9346508563900
2013-10-01	218.6547659828100
2014-01-01	224.7296739130430
2014-04-01	223.0941125541130
2014-07-01	235.6404285086890
2014-10-01	247.0123550724640
2015-01-01	273.9598030303030
2015-04-01	276.7962337662340
2015-07-01	280.4954642700300
2015-10-01	285.5244212309430
2016-01-01	283.1119599723950
2016-04-01	277.3807647907650
2016-07-01	278.8541341991340
2016-10-01	286.7370995670990
2017-01-01	290.3019637681160
2017-04-01	281.9982233201580
2017-07-01	260.9852104899930
2017-10-01	264.6203968253960
2018-01-01	253.0833425559950
2018-04-01	265.8805521049000
2018-07-01	278.7718787878790