Month	US dollars
1999-07-31	3697
1999-08-31	3806
1999-09-30	3707
1999-10-31	3270
1999-11-30	3479
1999-12-31	3462
2000-01-31	3364
2000-02-29	3304
2000-03-31	3281
2000-04-30	3104
2000-05-31	3155
2000-06-30	3274
2000-07-31	3154
2000-08-31	3035
2000-09-30	3027
2000-10-31	2886
2000-11-30	2980
2000-12-31	3238
2001-01-31	3684
2001-02-28	3624
2001-03-31	3473
2001-04-30	3918
2001-05-31	3820
2001-06-30	3881
2001-07-31	4331
2001-08-31	4526
2001-09-30	4620
2001-10-31	4947
2001-11-30	5320
2001-12-31	5501
2002-01-31	6448
2002-02-28	5799
2002-03-31	5915
2002-04-30	6618
2002-05-31	6830
2002-06-30	7251
2002-07-31	7333
2002-08-31	7269
2002-09-30	7365
2002-10-31	7307
2002-11-30	7357
2002-12-31	7780
2003-01-31	9100
2003-02-28	9802
2003-03-31	10011
2003-04-30	10149
2003-05-31	10631
2003-06-30	10438
2003-07-31	10235
2003-08-31	10084
2003-09-30	10696
2003-10-31	10645
2003-11-30	8971
2003-12-31	9234
2004-01-31	10320
2004-02-29	10268
2004-03-31	11332
2004-04-30	11104
2004-05-31	11256
2004-06-30	11259
2004-07-31	11144
2004-08-31	9681
2004-09-30	9057
2004-10-31	9140
2004-11-30	9367
2004-12-31	9553
2005-01-31	9857
2005-02-28	10175
2005-03-31	11237
2005-04-30	12263
2005-05-31	11868
2005-06-30	11696
2005-07-31	11647
2005-08-31	11793
2005-09-30	11334
2005-10-31	11009
2005-11-30	10459
2005-12-31	9806
2006-01-31	10174
2006-02-28	9923
2006-03-31	9117
2006-04-30	9490
2006-05-31	8755
2006-06-30	8691
2006-07-31	8245
2006-08-31	8244
2006-09-30	8025
2006-10-31	8448
2006-11-30	8920
2006-12-31	8451
2007-01-31	6360
2007-02-28	6468
2007-03-31	8532
2007-04-30	8608
2007-05-31	8457
2007-06-30	8476
2007-07-31	8601
2007-08-31	8622
2007-09-30	8927
2007-10-31	8653
2007-11-30	8755
2007-12-31	8074
2008-01-31	7619
2008-02-29	7447
2008-03-31	9719
2008-04-30	8890
2008-05-31	8832
2008-06-30	8920
2008-07-31	8283
2008-08-31	7952
2008-09-30	6641
2008-10-31	5525
2008-11-30	5233
2008-12-31	5609
2009-01-31	4771
2009-02-28	4755
2009-03-31	6987
2009-04-30	6464
2009-05-31	6778
2009-06-30	6748
2009-07-31	6377
2009-08-31	6442
2009-09-30	6534
2009-10-31	6612
2009-11-30	6715
2009-12-31	6484
2010-01-31	6357
2010-02-28	6220
2010-03-31	7136
2010-04-30	6686
2010-05-31	6099
2010-06-30	5832
2010-07-31	6040
2010-08-31	5934
2010-09-30	6194
2010-10-31	6289
2010-11-30	5994
2010-12-31	6120
2011-01-31	6692
2011-02-28	7709
2011-03-31	7228
2011-04-30	7048
2011-05-31	6551
2011-06-30	6454
2011-07-31	6470
2011-08-31	6511
2011-09-30	6214
2011-10-31	6363
2011-11-30	6228
2011-12-31	6091
2012-01-31	5905
2012-02-29	7633
2012-03-31	6762
2012-04-30	6025
2012-05-31	5798
2012-06-30	5855
2012-07-31	5799
2012-08-31	5881
2012-09-30	5942
2012-10-31	5935
2012-11-30	5919
2012-12-31	5929
2013-01-31	5551
2013-02-28	5423
2013-03-31	5848
2013-04-30	5851
2013-05-31	5756
2013-06-30	5775
2013-07-31	6407
2013-08-31	9571
2013-09-30	10703
2013-10-31	11402
2013-11-30	10430
2013-12-31	10617
2014-01-31	10205
2014-02-28	10209
2014-03-31	11659
2014-04-30	11326
2014-05-31	10509
2014-06-30	10506
2014-07-31	9279
2014-08-31	10977
2014-09-30	10142
2014-10-31	10578
2014-11-30	9602
2014-12-31	9845
2015-01-31	9735
2015-02-28	7975
2015-03-31	9272
2015-04-30	9959
2015-05-31	9450
2015-06-30	8687
2015-07-31	8724
2015-08-31	9131
2015-09-30	10747
2015-10-31	10460
2015-11-30	9975
2015-12-31	10286
2016-01-31	9910
2016-02-29	10021
2016-03-31	10523
2016-04-30	11695
2016-05-31	11706
2016-06-30	12209
2016-07-31	11631
2016-08-31	11427
2016-09-30	11128
2016-10-31	10918
2016-11-30	10679
2016-12-31	10797
2017-01-31	10378
2017-02-28	9391
2017-03-31	9712
2017-04-30	9989
2017-05-31	10904
2017-06-30	10123
2017-07-31	10072
2017-08-31	11543
2017-09-30	10730
2017-10-31	9839
2017-11-30	11103
2017-12-31	11783
2018-01-31	11454
2018-02-28	9677
2018-03-31	10461
2018-04-30	9799
2018-05-31	9044
2018-06-30	8739
2018-07-31	8897
2018-08-31	8632
2018-09-30	8295
2018-10-31	8641
2018-11-30	8413
2018-12-31	8384
2019-01-31	7346
2019-02-28	8062
2019-03-31	6757
2019-04-30	6338
2019-05-31	6385
2019-06-30	6355
2019-07-31	6393
2019-08-31	6293
2019-09-30	6229
2019-10-31	7147
2019-11-30	8180
2019-12-31	9678
2020-01-31	7371
2020-02-29	6733
2020-03-31	5780
2020-04-30	10611
2020-05-31	14885
2020-06-30	15784
2020-07-31	17382
2020-08-31	16609
2020-09-30	16508
2020-10-31	16411
2020-11-30	17476
2020-12-31	17204
2021-01-31	15595
2021-02-28	14188
2021-03-31	17063
2021-04-30	18028
2021-05-31	16211
2021-06-30	14789
2021-07-31	15449
2021-08-31	15175
2021-09-30	14850
2021-10-31	14910
2021-11-30	15954
2021-12-31	16011
2022-01-31	16129
2022-02-28	13379
2022-03-31	14529
2022-04-30	13401
2022-05-31	11695
2022-06-30	10765
2022-07-31	9753
2022-08-31	8639
2022-09-30	6198
2022-10-31	6046
2022-11-30	6129
2022-12-31	6020
2023-01-31	5391
2023-02-28	4299
2023-03-31	6209
2023-04-30	6981
2023-05-31	6270
2023-06-30	6360
2023-07-31	6184
2023-08-31	5975
2023-09-30	6414
2023-10-31	7379
2023-11-30	7969
2023-12-31	7798