Month	US dollars
1999-07-31	0
1999-08-31	-1220
1999-09-30	-1518
1999-10-31	-3004
1999-11-30	-7824
1999-12-31	-8841
2000-01-31	-4640
2000-02-29	-3454
2000-03-31	-4409
2000-04-30	-6072
2000-05-31	-7915
2000-06-30	-9107
2000-07-31	-9658
2000-08-31	-10443
2000-09-30	-11348
2000-10-31	-12052
2000-11-30	-14583
2000-12-31	-15562
2001-01-31	-15139
2001-02-28	-14102
2001-03-31	-15614
2001-04-30	-15618
2001-05-31	-15673
2001-06-30	-15159
2001-07-31	-15579
2001-08-31	-16666
2001-09-30	-16730
2001-10-31	-16260
2001-11-30	-16655
2001-12-31	-15866
2002-01-31	-15917
2002-02-28	-16946
2002-03-31	-17205
2002-04-30	-18002
2002-05-31	-17859
2002-06-30	-20011
2002-07-31	-18964
2002-08-31	-19497
2002-09-30	-19348
2002-10-31	-19930
2002-11-30	-20783
2002-12-31	-21383
2003-01-31	-21209
2003-02-28	-22723
2003-03-31	-23352
2003-04-30	-21877
2003-05-31	-22656
2003-06-30	-19351
2003-07-31	-19410
2003-08-31	-19837
2003-09-30	-21771
2003-10-31	-20972
2003-11-30	-22123
2003-12-31	-21901
2004-01-31	-21617
2004-02-29	-20793
2004-03-31	-21277
2004-04-30	-20986
2004-05-31	-20806
2004-06-30	-21154
2004-07-31	-19895
2004-08-31	-20419
2004-09-30	-21079
2004-10-31	-21623
2004-11-30	-23370
2004-12-31	-24108
2005-01-31	-23285
2005-02-28	-24291
2005-03-31	-23328
2005-04-30	-23929
2005-05-31	-23331
2005-06-30	-23008
2005-07-31	-21088
2005-08-31	-20841
2005-09-30	-22158
2005-10-31	-21656
2005-11-30	-22029
2005-12-31	-21659
2006-01-31	-22890
2006-02-28	-21666
2006-03-31	-22391
2006-04-30	-22900
2006-05-31	-24953
2006-06-30	-21296
2006-07-31	-22044
2006-08-31	-23091
2006-09-30	-23612
2006-10-31	-24520
2006-11-30	-25072
2006-12-31	-24974
2007-01-31	-25036
2007-02-28	-24811
2007-03-31	-23828
2007-04-30	-25741
2007-05-31	-24674
2007-06-30	-24116
2007-07-31	-24431
2007-08-31	-21495
2007-09-30	-22802
2007-10-31	-25755
2007-11-30	-26981
2007-12-31	-27251
2008-01-31	-27052
2008-02-29	-27571
2008-03-31	-28059
2008-04-30	-29278
2008-05-31	-28599
2008-06-30	-28078
2008-07-31	-26822
2008-08-31	-25734
2008-09-30	-24438
2008-10-31	-23115
2008-11-30	-23090
2008-12-31	-22937
2009-01-31	-18079
2009-02-28	-17574
2009-03-31	-18335
2009-04-30	-19047
2009-05-31	-21363
2009-06-30	-19907
2009-07-31	-19582
2009-08-31	-18401
2009-09-30	-17663
2009-10-31	-17481
2009-11-30	-17886
2009-12-31	-17545
2010-01-31	-16815
2010-02-28	-18155
2010-03-31	-20822
2010-04-30	-22189
2010-05-31	-22510
2010-06-30	-21374
2010-07-31	-22542
2010-08-31	-22441
2010-09-30	-23884
2010-10-31	-22955
2010-11-30	-23114
2010-12-31	-24828
2011-01-31	-28225
2011-02-28	-30469
2011-03-31	-28301
2011-04-30	-31300
2011-05-31	-31413
2011-06-30	-32397
2011-07-31	-32816
2011-08-31	-34879
2011-09-30	-32856
2011-10-31	-35687
2011-11-30	-35644
2011-12-31	-34677
2012-01-31	-34566
2012-02-29	-36324
2012-03-31	-35376
2012-04-30	-36835
2012-05-31	-38224
2012-06-30	-38121
2012-07-31	-37408
2012-08-31	-38493
2012-09-30	-38603
2012-10-31	-39829
2012-11-30	-40200
2012-12-31	-40290
2013-01-31	-40458
2013-02-28	-39071
2013-03-31	-40671
2013-04-30	-39554
2013-05-31	-41316
2013-06-30	-42580
2013-07-31	-42863
2013-08-31	-43200
2013-09-30	-44779
2013-10-31	-45962
2013-11-30	-47689
2013-12-31	-47578
2014-01-31	-46817
2014-02-28	-47855
2014-03-31	-51291
2014-04-30	-47493
2014-05-31	-50869
2014-06-30	-51667
2014-07-31	-51397
2014-08-31	-51573
2014-09-30	-50408
2014-10-31	-53629
2014-11-30	-55476
2014-12-31	-53355
2015-01-31	-55613
2015-02-28	-61548
2015-03-31	-71279
2015-04-30	-71526
2015-05-31	-74233
2015-06-30	-71558
2015-07-31	-75206
2015-08-31	-76816
2015-09-30	-78859
2015-10-31	-80535
2015-11-30	-78591
2015-12-31	-80610
2016-01-31	-84900
2016-02-29	-83406
2016-03-31	-86599
2016-04-30	-92728
2016-05-31	-89090
2016-06-30	-90179
2016-07-31	-96120
2016-08-31	-94905
2016-09-30	-94118
2016-10-31	-95772
2016-11-30	-90953
2016-12-31	-85721
2017-01-31	-90859
2017-02-28	-89906
2017-03-31	-92327
2017-04-30	-98620
2017-05-31	-100991
2017-06-30	-95277
2017-07-31	-105956
2017-08-31	-107911
2017-09-30	-94780
2017-10-31	-94903
2017-11-30	-92874
2017-12-31	-98546
2018-01-31	-102197
2018-02-28	-98347
2018-03-31	-100019
2018-04-30	-98363
2018-05-31	-100439
2018-06-30	-97870
2018-07-31	-95240
2018-08-31	-97998
2018-09-30	-95624
2018-10-31	-97897
2018-11-30	-106444
2018-12-31	-108225
2019-01-31	-110858
2019-02-28	-104962
2019-03-31	-99688
2019-04-30	-100816
2019-05-31	-91723
2019-06-30	-90949
2019-07-31	-95030
2019-08-31	-93672
2019-09-30	-81749
2019-10-31	-95883
2019-11-30	-93849
2019-12-31	-96987
2020-01-31	-88971
2020-02-29	-82893
2020-03-31	-83445
2020-04-30	-85329
2020-05-31	-85176
2020-06-30	-81736
2020-07-31	-82851
2020-08-31	-81830
2020-09-30	-72971
2020-10-31	-76074
2020-11-30	-80162
2020-12-31	-80710
2021-01-31	-75463
2021-02-28	-73902
2021-03-31	-73861
2021-04-30	-72852
2021-05-31	-72801
2021-06-30	-71330
2021-07-31	-71798
2021-08-31	-68557
2021-09-30	-70356
2021-10-31	-69018
2021-11-30	-72117
2021-12-31	-73304
2022-01-31	-67680
2022-02-28	-70803
2022-03-31	-72293
2022-04-30	-66953
2022-05-31	-64381
2022-06-30	-63604
2022-07-31	-62510
2022-08-31	-61702
2022-09-30	-55454
2022-10-31	-60686
2022-11-30	-63509
2022-12-31	-64609
2023-01-31	-63711
2023-02-28	-60137
2023-03-31	-62292
2023-04-30	-64362
2023-05-31	-60484
2023-06-30	-61608
2023-07-31	-65875
2023-08-31	-66422
2023-09-30	-61459
2023-10-31	-62379
2023-11-30	-63588
2023-12-31	-65083