Month	US dollars
1999-07-31	9068
1999-08-31	5857
1999-09-30	10284
1999-10-31	7880
1999-11-30	6600
1999-12-31	6887
2000-01-31	10403
2000-02-29	10982
2000-03-31	7907
2000-04-30	7813
2000-05-31	7767
2000-06-30	8759
2000-07-31	7465
2000-08-31	7306
2000-09-30	7417
2000-10-31	6803
2000-11-30	7095
2000-12-31	8051
2001-01-31	7725
2001-02-28	7989
2001-03-31	8176
2001-04-30	8271
2001-05-31	7642
2001-06-30	7400
2001-07-31	8399
2001-08-31	8169
2001-09-30	8535
2001-10-31	9051
2001-11-30	8976
2001-12-31	9455
2002-01-31	10198
2002-02-28	10208
2002-03-31	10916
2002-04-30	11700
2002-05-31	11695
2002-06-30	12498
2002-07-31	13615
2002-08-31	13455
2002-09-30	13570
2002-10-31	13607
2002-11-30	13924
2002-12-31	14709
2003-01-31	15757
2003-02-28	16021
2003-03-31	16171
2003-04-30	16460
2003-05-31	17082
2003-06-30	17814
2003-07-31	16948
2003-08-31	16840
2003-09-30	16639
2003-10-31	17027
2003-11-30	17368
2003-12-31	19326
2004-01-31	17601
2004-02-29	17501
2004-03-31	19097
2004-04-30	19863
2004-05-31	19448
2004-06-30	20280
2004-07-31	21077
2004-08-31	21330
2004-09-30	21683
2004-10-31	20855
2004-11-30	22022
2004-12-31	21976
2005-01-31	20471
2005-02-28	20190
2005-03-31	21971
2005-04-30	22449
2005-05-31	21173
2005-06-30	20954
2005-07-31	21425
2005-08-31	20143
2005-09-30	20911
2005-10-31	21033
2005-11-30	21412
2005-12-31	20867
2006-01-31	21913
2006-02-28	21237
2006-03-31	22333
2006-04-30	22127
2006-05-31	21398
2006-06-30	21178
2006-07-31	19846
2006-08-31	20272
2006-09-30	20125
2006-10-31	19796
2006-11-30	20302
2006-12-31	20187
2007-01-31	17467
2007-02-28	17835
2007-03-31	19607
2007-04-30	20547
2007-05-31	20593
2007-06-30	20798
2007-07-31	21413
2007-08-31	19896
2007-09-30	18618
2007-10-31	16518
2007-11-30	15829
2007-12-31	14518
2008-01-31	12733
2008-02-29	11269
2008-03-31	12837
2008-04-30	11541
2008-05-31	10641
2008-06-30	10156
2008-07-31	9166
2008-08-31	8296
2008-09-30	6970
2008-10-31	5948
2008-11-30	5635
2008-12-31	5957
2009-01-31	5176
2009-02-28	5103
2009-03-31	7416
2009-04-30	6762
2009-05-31	7127
2009-06-30	7029
2009-07-31	6919
2009-08-31	6977
2009-09-30	6910
2009-10-31	6914
2009-11-30	7370
2009-12-31	6952
2010-01-31	6799
2010-02-28	6660
2010-03-31	7642
2010-04-30	7004
2010-05-31	6299
2010-06-30	6037
2010-07-31	6451
2010-08-31	6228
2010-09-30	6541
2010-10-31	6583
2010-11-30	6453
2010-12-31	6784
2011-01-31	7269
2011-02-28	8258
2011-03-31	8011
2011-04-30	7841
2011-05-31	7282
2011-06-30	7117
2011-07-31	7353
2011-08-31	7463
2011-09-30	7075
2011-10-31	7029
2011-11-30	7275
2011-12-31	7090
2012-01-31	6634
2012-02-29	8462
2012-03-31	7369
2012-04-30	6643
2012-05-31	6376
2012-06-30	6446
2012-07-31	6521
2012-08-31	6417
2012-09-30	6472
2012-10-31	6377
2012-11-30	6576
2012-12-31	6850
2013-01-31	6636
2013-02-28	6386
2013-03-31	6497
2013-04-30	6544
2013-05-31	6494
2013-06-30	6462
2013-07-31	7157
2013-08-31	10579
2013-09-30	11346
2013-10-31	11978
2013-11-30	11144
2013-12-31	11498
2014-01-31	11115
2014-02-28	11093
2014-03-31	12463
2014-04-30	12135
2014-05-31	11424
2014-06-30	11253
2014-07-31	10152
2014-08-31	11749
2014-09-30	10584
2014-10-31	10772
2014-11-30	10281
2014-12-31	10135
2015-01-31	10026
2015-02-28	8871
2015-03-31	9613
2015-04-30	10324
2015-05-31	10147
2015-06-30	9072
2015-07-31	9092
2015-08-31	9547
2015-09-30	11191
2015-10-31	10879
2015-11-30	10613
2015-12-31	10782
2016-01-31	10527
2016-02-29	10819
2016-03-31	11107
2016-04-30	12236
2016-05-31	12410
2016-06-30	12817
2016-07-31	12244
2016-08-31	12034
2016-09-30	11462
2016-10-31	11204
2016-11-30	11189
2016-12-31	11373
2017-01-31	11394
2017-02-28	11436
2017-03-31	10058
2017-04-30	10409
2017-05-31	11573
2017-06-30	10600
2017-07-31	10547
2017-08-31	12155
2017-09-30	11185
2017-10-31	10255
2017-11-30	11688
2017-12-31	12382
2018-01-31	11943
2018-02-28	10858
2018-03-31	10865
2018-04-30	10209
2018-05-31	9967
2018-06-30	9356
2018-07-31	9525
2018-08-31	9393
2018-09-30	8935
2018-10-31	9280
2018-11-30	9089
2018-12-31	9116
2019-01-31	8054
2019-02-28	8991
2019-03-31	7486
2019-04-30	7049
2019-05-31	7258
2019-06-30	7044
2019-07-31	7090
2019-08-31	7199
2019-09-30	6871
2019-10-31	7803
2019-11-30	8874
2019-12-31	10446
2020-01-31	8288
2020-02-29	7944
2020-03-31	6447
2020-04-30	11405
2020-05-31	15851
2020-06-30	16466
2020-07-31	18147
2020-08-31	17435
2020-09-30	17263
2020-10-31	17152
2020-11-30	18228
2020-12-31	20360
2021-01-31	17390
2021-02-28	16631
2021-03-31	18985
2021-04-30	19001
2021-05-31	17154
2021-06-30	15372
2021-07-31	16018
2021-08-31	15876
2021-09-30	15457
2021-10-31	17604
2021-11-30	18894
2021-12-31	19099
2022-01-31	17744
2022-02-28	14320
2022-03-31	15237
2022-04-30	14091
2022-05-31	13542
2022-06-30	12426
2022-07-31	11383
2022-08-31	10453
2022-09-30	9233
2022-10-31	11724
2022-11-30	14456
2022-12-31	15996
2023-01-31	14738
2023-02-28	12046
2023-03-31	12762
2023-04-30	8089
2023-05-31	6884
2023-06-30	7007
2023-07-31	6714
2023-08-31	6567
2023-09-30	6907
2023-10-31	7920
2023-11-30	8600
2023-12-31	8981