Month	US Dollar per National Currency Units
1987-02-01	94.58053532583000
1987-03-01	88.80994671403200
1987-04-01	83.38892595063380
1987-05-01	78.30240388379920
1987-06-01	73.87161113983900
1987-07-01	70.62645667066880
1987-08-01	66.84491978609630
1987-09-01	63.66182836771070
1987-10-01	60.52536012589280
1987-11-01	56.71506352087110
1987-12-01	45.25501199257820
1988-01-01	45.03084612959880
1988-02-01	43.84042086804030
1988-03-01	43.84042086804030
1988-04-01	43.84042086804030
1988-05-01	43.84042086804030
1988-06-01	43.84042086804030
1988-07-01	43.84042086804030
1988-08-01	43.84042086804030
1988-09-01	43.84042086804030
1988-10-01	43.84042086804030
1988-11-01	43.84042086804030
1988-12-01	43.84042086804030
1989-01-01	43.29004329004330
1989-02-01	42.77159965782720
1989-03-01	42.21190375685940
1989-04-01	41.71881518564870
1989-05-01	41.15226337448560
1989-06-01	40.65040650406500
1989-07-01	40.14452027298270
1989-08-01	39.65107057890560
1989-09-01	39.20031360250880
1989-10-01	38.71467286101430
1989-11-01	38.27018752391890
1989-12-01	37.86444528587660
1990-01-01	37.38317757009350
1990-02-01	36.99593044765080
1990-03-01	36.58982802780830
1990-04-01	36.17945007235890
1990-05-01	35.78329635726040
1990-06-01	35.48867911136350
1990-07-01	35.16916367728780
1990-08-01	34.98705478972780
1990-09-01	34.59489379367610
1990-10-01	34.28179636612960
1990-11-01	34.08083975189150
1990-12-01	33.95124601072860
1991-01-01	33.79520108144640
1991-02-01	33.66776648037170
1991-03-01	33.54579000335460
1991-04-01	33.39344152808390
1991-05-01	33.25573661456600
1991-06-01	33.13233052812930
1991-07-01	32.98805832288710
1991-08-01	32.85798777682850
1991-09-01	32.72465475489230
1991-10-01	32.59239945244770
1991-11-01	32.54085504350710
1991-12-01	32.56268316509280
1992-01-01	32.61578604044360
1992-02-01	32.67173078493830
1992-03-01	32.43067942273390
1992-04-01	32.47860471914130
1992-05-01	32.11881391643970
1992-06-01	32.02808222249270
1992-07-01	32.11241915698480
1992-08-01	32.45699448231090
1992-09-01	32.08923374118750
1992-10-01	31.92715500314480
1992-11-01	32.09345614429220
1992-12-01	32.09860692045960
1993-01-01	32.32166521219170
1993-02-01	32.32270993600100
1993-03-01	32.28305785123970
1993-04-01	32.23518793114560
1993-05-01	32.02356934703940
1993-06-01	32.03895937459950
1993-07-01	32.06258616820030
1993-08-01	32.10788248515010
1993-09-01	32.07389826159470
1993-10-01	32.07595586348470
1993-11-01	32.12851405622490
1993-12-01	32.19678676068130
1994-01-01	32.19264076232170
1994-02-01	31.17692907248640
1994-03-01	29.76367640931010
1994-04-01	30.60631102133260
1994-05-01	30.17046311660880
1994-06-01	29.48287045226720
1994-07-01	29.39533789940920
1994-08-01	29.59105166597620
1994-09-01	29.37720329024680
1994-10-01	29.15451895043730
1994-11-01	28.98718766305290
1994-12-01	18.77934272300470
1995-01-01	17.55926251097450
1995-02-01	17.13062098501070
1995-03-01	14.66813348001470
1995-04-01	17.28608470181500
1995-05-01	16.18777822743830
1995-06-01	15.84987003106570
1995-07-01	16.42521599159030
1995-08-01	15.84434515321480
1995-09-01	15.57753719137000
1995-10-01	13.94369535814380
1995-11-01	13.06899120456890
1995-12-01	13.08472358521430
1996-01-01	13.53033501109490
1996-02-01	13.26435866825840
1996-03-01	13.24871818651550
1996-04-01	13.50584803219790
1996-05-01	13.49618732708010
1996-06-01	13.13922320912390
1996-07-01	13.13456360412430
1996-08-01	13.34578940344320
1996-09-01	13.26717435720540
1996-10-01	12.63072803516390
1996-11-01	12.70648030495550
1996-12-01	12.73739316511480
1997-01-01	12.75624099090480
1997-02-01	12.84620523097480
1997-03-01	12.67346809454410
1997-04-01	12.61559034655030
1997-05-01	12.64462287412280
1997-06-01	12.56597134958530
1997-07-01	12.80606495236140
1997-08-01	12.89523907773250
1997-09-01	12.78788731313700
1997-10-01	12.34065133957770
1997-11-01	12.19512195121950
1997-12-01	12.37118503581460
1998-01-01	11.96129325502670
1998-02-01	11.65066641811910
1998-03-01	11.74191275758820
1998-04-01	11.78995024641000
1998-05-01	11.26100763496320
1998-06-01	11.06109040229190
1998-07-01	11.21352800017940
1998-08-01	10.04016064257030
1998-09-01	9.89491599216323
1998-10-01	9.84494216096480
1998-11-01	10.05995734578090
1998-12-01	10.13684744044600
1999-01-01	9.82849280062902
1999-02-01	10.06471612468170
1999-03-01	10.50883793270140
1999-04-01	10.76762390843210
1999-05-01	10.25662064862870
1999-06-01	10.54018445322790
1999-07-01	10.65791296748270
1999-08-01	10.65882177384110
1999-09-01	10.68581564830840
1999-10-01	10.36226477658960
1999-11-01	10.68947087119190
1999-12-01	10.51049472898690
2000-01-01	10.51270460351330
2000-02-01	10.66689422707680
2000-03-01	10.83059860718500
2000-04-01	10.63004262647090
2000-05-01	10.49604299179210
2000-06-01	10.04641443468830
2000-07-01	10.68261937827160
2000-08-01	10.83224108235750
2000-09-01	10.62834792959780
2000-10-01	10.36881888784050
2000-11-01	10.63173786387120
2000-12-01	10.44691920352690
2001-01-01	10.34265206284200
2001-02-01	10.35003829514170
2001-03-01	10.48437827636820
2001-04-01	10.79086229780620
2001-05-01	11.00703349440290
2001-06-01	11.03655306374710
2001-07-01	10.87902523933860
2001-08-01	10.93637218661830
2001-09-01	10.49780595855470
2001-10-01	10.82005171984720
2001-11-01	10.79074585635360
2001-12-01	10.93816654452380
2002-01-01	10.90346075844470
2002-02-01	11.01139679568350
2002-03-01	11.07444240182510
2002-04-01	10.73007425211380
2002-05-01	10.40214700314140
2002-06-01	10.00020000400010
2002-07-01	10.31523353688730
2002-08-01	10.10203050813210
2002-09-01	9.83603332448090
2002-10-01	9.84319785812015
2002-11-01	9.85260502876961
2002-12-01	9.69696969696970
2003-01-01	9.10224552397076
2003-02-01	9.06421086980167
2003-03-01	9.26878551103449
2003-04-01	9.58736002454364
2003-05-01	9.60956343753303
2003-06-01	9.54125639264178
2003-07-01	9.53488815576193
2003-08-01	9.14603473663993
2003-09-01	9.15147521780511
2003-10-01	9.00268279947424
2003-11-01	8.80886524197953
2003-12-01	8.89996440014240
2004-01-01	9.16212378029227
2004-02-01	9.01453142465655
2004-03-01	8.96539358077820
2004-04-01	8.81935318863715
2004-05-01	8.73248046107497
2004-06-01	8.76301307441551
2004-07-01	8.71072551632825
2004-08-01	8.79205901230009
2004-09-01	8.76378104569435
2004-10-01	8.68673882451050
2004-11-01	8.89125989152663
2004-12-01	8.87721042539592
2005-01-01	8.85026241028047
2005-02-01	9.01266279122167
2005-03-01	8.85410210550548
2005-04-01	9.00633145101006
2005-05-01	9.17178758139961
2005-06-01	9.22271000110673
2005-07-01	9.39584703561026
2005-08-01	9.17970184328413
2005-09-01	9.21701460896815
2005-10-01	9.16657500091666
2005-11-01	9.46342386675499
2005-12-01	9.27841747311579
2006-01-01	9.56041224497600
2006-02-01	9.54553698418305
2006-03-01	9.13158615651539
2006-04-01	8.96234024628511
2006-05-01	8.98448379648347
2006-06-01	8.77400787905908
2006-07-01	9.17700609353205
2006-08-01	9.17035773565527
2006-09-01	9.07836444186215
2006-10-01	9.33767846637969
2006-11-01	9.05354265123943
2006-12-01	9.19033177097693
2007-01-01	9.02079292769835
2007-02-01	9.02608538676776
2007-03-01	9.02421196069053
2007-04-01	9.14812646370023
2007-05-01	9.27016028107126
2007-06-01	9.20293389532583
2007-07-01	9.09314104371073
2007-08-01	9.00397975905350
2007-09-01	9.15390459800628
2007-10-01	9.33602210770035
2007-11-01	9.14536558598930
2007-12-01	9.20284920211298
2008-01-01	9.22134926782487
2008-02-01	9.31584438813534
2008-03-01	9.34911463884370
2008-04-01	9.57267575432685
2008-05-01	9.66678589035932
2008-06-01	9.72374831049873
2008-07-01	9.93936984395189
2008-08-01	9.85989094960610
2008-09-01	9.26620891594622
2008-10-01	7.74341422620062
2008-11-01	7.56904864627565
2008-12-01	7.38645177016317
2009-01-01	7.06648859115417
2009-02-01	6.69904538603249
2009-03-01	6.97753930099011
2009-04-01	7.21152112615114
2009-05-01	7.59936165362110
2009-06-01	7.57443778735523
2009-07-01	7.53903334514449
2009-08-01	7.54933490359499
2009-09-01	7.40510359739933
2009-10-01	7.52881654532724
2009-11-01	7.72349874493145
2009-12-01	7.65773009564505
2010-01-01	7.73425113113423
2010-02-01	7.77974000108916
2010-03-01	8.02310654685494
2010-04-01	8.08420508011447
2010-05-01	7.76120329695916
2010-06-01	7.90095364510496
2010-07-01	7.88655972491680
2010-08-01	7.68356025447952
2010-09-01	7.99929606194655
2010-10-01	8.01436173623133
2010-11-01	8.00704620065658
2010-12-01	8.09251361565416
2011-01-01	8.31676910153943
2011-02-01	8.21490183192311
2011-03-01	8.35575460819867
2011-04-01	8.63051058100597
2011-05-01	8.60170657858519
2011-06-01	8.44673069288532
2011-07-01	8.58170209479348
2011-08-01	8.05490221348713
2011-09-01	7.45062100926112
2011-10-01	7.57730747956021
2011-11-01	7.12534914210796
2011-12-01	7.14775846294602
2012-01-01	7.72176921176180
2012-02-01	7.76524122721872
2012-03-01	7.81012035395465
2012-04-01	7.57042386803237
2012-05-01	7.18550826692726
2012-06-01	7.31785850188801
2012-07-01	7.52802306586267
2012-08-01	7.53318367408434
2012-09-01	7.74173569714330
2012-10-01	7.63941940412529
2012-11-01	7.67035866597122
2012-12-01	7.68633600049193
2013-01-01	7.86571648811490
2013-02-01	7.77121541809139
2013-03-01	8.09198973935701
2013-04-01	8.22706705059646
2013-05-01	7.91590146285859
2013-06-01	7.58242091534985
2013-07-01	7.85416388498362
2013-08-01	7.54494903386928
2013-09-01	7.68527271190218
2013-10-01	7.75777134744731
2013-11-01	7.63796066450258
2013-12-01	7.64730623637824
2014-01-01	7.48105423016211
2014-02-01	7.51924927815207
2014-03-01	7.64309790044101
2014-04-01	7.61289929656811
2014-05-01	7.77242344162910
2014-06-01	7.67324263560538
2014-07-01	7.65825789949302
2014-08-01	7.64461704290924
2014-09-01	7.43267851435622
2014-10-01	7.44939995083396
2014-11-01	7.28762051902433
2014-12-01	6.79440141323549
2015-01-01	6.80837157368701
2015-02-01	6.70115527917013
2015-03-01	6.59883068720223
2015-04-01	6.56922318935786
2015-05-01	6.51122209127431
2015-06-01	6.42359772861584
2015-07-01	6.16750955963982
2015-08-01	5.92196040577273
2015-09-01	5.87982807382712
2015-10-01	6.07891649392412
2015-11-01	6.04258816136127
2015-12-01	5.81175718478482
2016-01-01	5.41917303419498
2016-02-01	5.50418317921620
2016-03-01	5.74663103755423
2016-04-01	5.74735765231935
2016-05-01	5.41926113793645
2016-06-01	5.28784377594348
2016-07-01	5.30217070868814
2016-08-01	5.38291355579121
2016-09-01	5.12815253176891
2016-10-01	5.30664444951524
2016-11-01	4.86568282559933
2016-12-01	4.82360091455473
2017-01-01	4.75710235381424
2017-02-01	5.04197443718960
2017-03-01	5.31654722157242
2017-04-01	5.23234215331809
2017-05-01	5.40187228893535
2017-06-01	5.58743497622546
2017-07-01	5.65335866038013
2017-08-01	5.59409263817409
2017-09-01	5.51571980143409
2017-10-01	5.22264119410468
2017-11-01	5.38074125091473
2017-12-01	5.05389984181294
2018-01-01	5.37068465487980
2018-02-01	5.36319560647016
2018-03-01	5.45648994914551
2018-04-01	5.30099022497403
2018-05-01	5.06331677628747
2018-06-01	4.98621312072121
2018-07-01	5.39039969813762
2018-08-01	5.24496614374354
2018-09-01	5.29139724635687