Month	US dollars
1999-08-31	-4074
1999-09-30	-7348
1999-10-31	-8681
1999-11-30	-7523
1999-12-31	-8034
2000-01-31	-11348
2000-02-29	-11954
2000-03-31	-9448
2000-04-30	-9211
2000-05-31	-8772
2000-06-30	-9822
2000-07-31	-8654
2000-08-31	-8315
2000-09-30	-8383
2000-10-31	-7785
2000-11-30	-8127
2000-12-31	-9102
2001-01-31	-8697
2001-02-28	-8883
2001-03-31	-9084
2001-04-30	-9268
2001-05-31	-8701
2001-06-30	-9791
2001-07-31	-9524
2001-08-31	-9063
2001-09-30	-9450
2001-10-31	-9797
2001-11-30	-9761
2001-12-31	-10302
2002-01-31	-11406
2002-02-28	-11091
2002-03-31	-11737
2002-04-30	-12499
2002-05-31	-12495
2002-06-30	-13149
2002-07-31	-14180
2002-08-31	-14030
2002-09-30	-14355
2002-10-31	-14554
2002-11-30	-15030
2002-12-31	-15800
2003-01-31	-17243
2003-02-28	-17168
2003-03-31	-17134
2003-04-30	-17300
2003-05-31	-18208
2003-06-30	-18809
2003-07-31	-18465
2003-08-31	-18098
2003-09-30	-18171
2003-10-31	-18547
2003-11-30	-18772
2003-12-31	-20516
2004-01-31	-18614
2004-02-29	-18456
2004-03-31	-20245
2004-04-30	-21269
2004-05-31	-20475
2004-06-30	-22041
2004-07-31	-22918
2004-08-31	-23895
2004-09-30	-24651
2004-10-31	-23283
2004-11-30	-25280
2004-12-31	-26169
2005-01-31	-26880
2005-02-28	-28064
2005-03-31	-29544
2005-04-30	-30941
2005-05-31	-31764
2005-06-30	-31717
2005-07-31	-30272
2005-08-31	-30159
2005-09-30	-31431
2005-10-31	-31898
2005-11-30	-29737
2005-12-31	-30509
2006-01-31	-30463
2006-02-28	-29424
2006-03-31	-30245
2006-04-30	-31553
2006-05-31	-32646
2006-06-30	-30028
2006-07-31	-28686
2006-08-31	-28779
2006-09-30	-30231
2006-10-31	-29732
2006-11-30	-31010
2006-12-31	-32149
2007-01-31	-28522
2007-02-28	-28143
2007-03-31	-30484
2007-04-30	-30243
2007-05-31	-30629
2007-06-30	-41933
2007-07-31	-31308
2007-08-31	-32026
2007-09-30	-35507
2007-10-31	-39504
2007-11-30	-41872
2007-12-31	-40304
2008-01-31	-38516
2008-02-29	-44666
2008-03-31	-42893
2008-04-30	-35852
2008-05-31	-29861
2008-06-30	-26555
2008-07-31	-25600
2008-08-31	-19864
2008-09-30	-58422
2008-10-31	-85959
2008-11-30	-66899
2008-12-31	-49370
2009-01-31	-36751
2009-02-28	-31627
2009-03-31	-33478
2009-04-30	-33214
2009-05-31	-22665
2009-06-30	-24868
2009-07-31	-24184
2009-08-31	-22401
2009-09-30	-22138
2009-10-31	-22076
2009-11-30	-21238
2009-12-31	-17898
2010-01-31	-18568
2010-02-28	-20070
2010-03-31	-24813
2010-04-30	-25635
2010-05-31	-23361
2010-06-30	-24240
2010-07-31	-25709
2010-08-31	-24649
2010-09-30	-24409
2010-10-31	-26046
2010-11-30	-24626
2010-12-31	-27498
2011-01-31	-24605
2011-02-28	-27059
2011-03-31	-28787
2011-04-30	-27990
2011-05-31	-26702
2011-06-30	-23730
2011-07-31	-24346
2011-08-31	-26494
2011-09-30	-28556
2011-10-31	-29237
2011-11-30	-28700
2011-12-31	-27736
2012-01-31	-25765
2012-02-29	-27202
2012-03-31	-26575
2012-04-30	-27130
2012-05-31	-26448
2012-06-30	-26800
2012-07-31	-26877
2012-08-31	-26861
2012-09-30	-27650
2012-10-31	-26649
2012-11-30	-27303
2012-12-31	-29047
2013-01-31	-26087
2013-02-28	-23302
2013-03-31	-25108
2013-04-30	-24755
2013-05-31	-26148
2013-06-30	-24655
2013-07-31	-26335
2013-08-31	-25110
2013-09-30	-24711
2013-10-31	-26561
2013-11-30	-26831
2013-12-31	-24408
2014-01-31	-25914
2014-02-28	-26458
2014-03-31	-25976
2014-04-30	-26328
2014-05-31	-23834
2014-06-30	-26386
2014-07-31	-25938
2014-08-31	-26060
2014-09-30	-25901
2014-10-31	-25516
2014-11-30	-25551
2014-12-31	-25379
2015-01-31	-24567
2015-02-28	-25450
2015-03-31	-25498
2015-04-30	-28258
2015-05-31	-26779
2015-06-30	-24965
2015-07-31	-25473
2015-08-31	-25360
2015-09-30	-25462
2015-10-31	-27616
2015-11-30	-25312
2015-12-31	-25394
2016-01-31	-24167
2016-02-29	-25487
2016-03-31	-25489
2016-04-30	-28095
2016-05-31	-26562
2016-06-30	-25127
2016-07-31	-25175
2016-08-31	-25895
2016-09-30	-25554
2016-10-31	-23110
2016-11-30	-21820
2016-12-31	-21963
2017-01-31	-21113
2017-02-28	-20693
2017-03-31	-19953
2017-04-30	-20305
2017-05-31	-21951
2017-06-30	-22019
2017-07-31	-22413
2017-08-31	-24447
2017-09-30	-24877
2017-10-31	-24372
2017-11-30	-24981
2017-12-31	-25643
2018-01-31	-24669
2018-02-28	-26475
2018-03-31	-26718
2018-04-30	-25884
2018-05-31	-24961
2018-06-30	-24864
2018-07-31	-23596
2018-08-31	-23562
2018-09-30	-20712
2018-10-31	-21009
2018-11-30	-20347
2018-12-31	-20788
2019-01-31	-17878
2019-02-28	-19522
2019-03-31	-19204
2019-04-30	-18865
2019-05-31	-18495
2019-06-30	-21658
2019-07-31	-22696
2019-08-31	-23690
2019-09-30	-23940
2019-10-31	-23606
2019-11-30	-22987
2019-12-31	-25590
2020-01-31	-24100
2020-02-29	-24032
2020-03-31	-22239
2020-04-30	-24630
2020-05-31	-28791
2020-06-30	-29755
2020-07-31	-32147
2020-08-31	-33934
2020-09-30	-34550
2020-10-31	-32798
2020-11-30	-33378
2020-12-31	-36443
2021-01-31	-32000
2021-02-28	-31124
2021-03-31	-34165
2021-04-30	-30789
2021-05-31	-28031
2021-06-30	-27187
2021-07-31	-26632
2021-08-31	-27858
2021-09-30	-27772
2021-10-31	-30235
2021-11-30	-33355
2021-12-31	-35475
2022-01-31	-31062
2022-02-28	-28173
2022-03-31	-30964
2022-04-30	-29798
2022-05-31	-29413
2022-06-30	-26482
2022-07-31	-24768
2022-08-31	-21513
2022-09-30	-20679
2022-10-31	-20216
2022-11-30	-21357
2022-12-31	-22601
2023-01-31	-21841
2023-02-28	-23479
2023-03-31	-24575
2023-04-30	-22117
2023-05-31	-20741
2023-06-30	-22549
2023-07-31	-22186
2023-08-31	-21980
2023-09-30	-21697
2023-10-31	-22052
2023-11-30	-23387
2023-12-31	-23563