Month	US dollars
1999-08-31	3999
1999-09-30	7438
1999-12-31	8127
2000-03-31	9156
2000-04-30	9293
2000-05-31	8854
2000-06-30	9906
2000-07-31	8737
2000-08-31	8387
2000-09-30	8504
2000-10-31	7862
2000-11-30	8210
2000-12-31	9237
2001-01-31	8780
2001-02-28	8966
2001-03-31	9180
2001-04-30	9362
2001-05-31	8774
2001-06-30	9865
2001-07-31	9590
2001-08-31	9117
2001-09-30	9544
2001-10-31	9886
2001-11-30	9803
2001-12-31	10366
2002-01-31	11474
2002-02-28	11157
2002-03-31	11821
2002-04-30	12564
2002-05-31	12565
2002-06-30	13225
2002-07-31	14258
2002-08-31	14094
2002-09-30	14425
2002-10-31	14615
2002-11-30	15097
2002-12-31	15870
2003-01-31	17317
2003-02-28	17250
2003-03-31	17213
2003-04-30	17816
2003-05-31	18293
2003-06-30	18898
2003-07-31	18540
2003-08-31	18169
2003-09-30	18251
2003-10-31	18639
2003-11-30	18862
2003-12-31	20603
2004-01-31	18717
2004-02-29	18563
2004-03-31	20329
2004-04-30	21222
2004-05-31	20411
2004-06-30	22153
2004-07-31	22861
2004-08-31	23835
2004-09-30	24768
2004-10-31	23404
2004-11-30	25407
2004-12-31	26303
2005-01-31	27014
2005-02-28	28176
2005-03-31	29654
2005-04-30	31053
2005-05-31	31875
2005-06-30	31829
2005-07-31	30385
2005-08-31	30277
2005-09-30	31486
2005-10-31	31953
2005-11-30	29795
2005-12-31	30573
2006-01-31	30529
2006-02-28	29476
2006-03-31	30302
2006-04-30	31606
2006-05-31	32698
2006-06-30	30086
2006-07-31	28741
2006-08-31	28837
2006-09-30	30288
2006-10-31	29789
2006-11-30	31068
2006-12-31	32205
2007-01-31	28582
2007-02-28	28202
2007-03-31	30538
2007-04-30	30246
2007-05-31	30631
2007-06-30	41935
2007-07-31	31310
2007-08-31	32029
2007-09-30	35511
2007-10-31	39505
2007-11-30	41873
2007-12-31	40308
2008-01-31	38518
2008-02-29	44674
2008-03-31	42897
2008-04-30	35851
2008-05-31	29864
2008-06-30	26553
2008-07-31	25600
2008-08-31	19864
2008-09-30	58428
2008-10-31	13568
2008-11-30	66903
2008-12-31	49375
2009-01-31	36757
2009-02-28	31634
2009-03-31	33477
2009-04-30	33214
2009-05-31	22668
2009-06-30	24867
2009-07-31	24179
2009-08-31	22383
2009-09-30	22139
2009-10-31	22074
2009-11-30	21237
2009-12-31	17903
2010-01-31	18571
2010-02-28	20074
2010-03-31	24809
2010-04-30	25638
2010-05-31	23360
2010-06-30	24236
2010-07-31	25703
2010-08-31	24653
2010-09-30	24407
2010-10-31	26047
2010-11-30	24610
2010-12-31	27500
2011-01-31	24606
2011-02-28	27058
2011-03-31	28788
2011-04-30	27990
2011-05-31	26703
2011-06-30	23733
2011-07-31	24341
2011-08-31	26493
2011-09-30	28554
2011-10-31	29231
2011-11-30	28724
2011-12-31	27728
2012-01-31	25762
2012-02-29	27203
2012-03-31	26572
2012-04-30	27127
2012-05-31	26446
2012-06-30	26805
2012-07-31	26880
2012-08-31	26856
2012-09-30	27652
2012-10-31	26645
2012-11-30	27299
2012-12-31	29047
2013-01-31	26086
2013-02-28	23302
2013-03-31	25110
2013-04-30	25424
2013-05-31	26148
2013-06-30	24653
2013-07-31	26336
2013-08-31	24608
2013-09-30	24709
2013-10-31	26559
2013-11-30	26828
2013-12-31	24405
2014-01-31	25913
2014-02-28	26457
2014-03-31	25972
2014-04-30	26326
2014-05-31	23824
2014-06-30	26387
2014-07-31	25936
2014-08-31	26050
2014-09-30	25899
2014-10-31	25515
2014-11-30	25550
2014-12-31	25380
2015-01-31	24567
2015-02-28	25451
2015-03-31	25497
2015-04-30	28257
2015-05-31	26795
2015-06-30	24965
2015-07-31	25473
2015-08-31	25361
2015-09-30	25458
2015-10-31	27622
2015-11-30	25311
2015-12-31	25393
2016-01-31	24168
2016-02-29	25486
2016-03-31	25485
2016-04-30	28092
2016-05-31	26561
2016-06-30	25125
2016-07-31	25174
2016-08-31	25893
2016-09-30	25550
2016-10-31	23108
2016-11-30	21822
2016-12-31	21962
2017-01-31	21114
2017-02-28	20692
2017-03-31	19952
2017-04-30	20303
2017-05-31	21951
2017-06-30	22019
2017-07-31	22411
2017-08-31	24449
2017-09-30	24877
2017-10-31	24372
2017-11-30	24981
2017-12-31	25642
2018-01-31	24669
2018-02-28	26475
2018-03-31	26721
2018-04-30	25882
2018-05-31	24960
2018-06-30	24867
2018-07-31	23595
2018-08-31	23560
2018-09-30	20711
2018-10-31	21010
2018-11-30	20344
2018-12-31	20787
2019-01-31	17873
2019-02-28	19515
2019-03-31	19201
2019-04-30	18858
2019-05-31	18487
2019-06-30	21652
2019-07-31	22677
2019-08-31	23681
2019-09-30	23930
2019-10-31	23595
2019-11-30	22978
2019-12-31	25593
2020-01-31	24104
2020-02-29	24028
2020-03-31	22230
2020-04-30	24664
2020-05-31	28798
2020-06-30	29751
2020-07-31	32149
2020-08-31	33931
2020-09-30	34552
2020-10-31	32799
2020-11-30	33375
2020-12-31	36450
2021-01-31	32005
2021-02-28	31126
2021-03-31	34166
2021-04-30	30791
2021-05-31	28039
2021-06-30	27187
2021-07-31	26629
2021-08-31	27856
2021-09-30	27774
2021-10-31	30228
2021-11-30	33352
2021-12-31	35483
2022-01-31	31071
2022-02-28	28170
2022-03-31	30964
2022-04-30	29791
2022-05-31	29410
2022-06-30	26467
2022-07-31	24758
2022-08-31	21509
2022-09-30	20672
2022-10-31	20216
2022-11-30	21356
2022-12-31	22597
2023-01-31	21837
2023-02-28	23463
2023-03-31	24548
2023-04-30	22094
2023-05-31	20723
2023-06-30	22541
2023-07-31	22186
2023-08-31	21982
2023-09-30	21705
2023-10-31	22065
2023-11-30	23401
2023-12-31	23578