Month	US dollars
1999-08-31	0
1999-09-30	0
1999-10-31	0
1999-11-30	0
1999-12-31	0
2000-01-31	0
2000-02-29	0
2000-03-31	0
2000-04-30	0
2000-05-31	0
2000-06-30	0
2000-07-31	0
2000-08-31	0
2000-09-30	0
2000-10-31	0
2000-11-30	0
2000-12-31	0
2001-01-31	-464
2001-02-28	-461
2001-03-31	-446
2001-04-30	-889
2001-05-31	-857
2001-06-30	-863
2001-07-31	-1352
2001-08-31	-1411
2001-09-30	-1430
2001-10-31	-1907
2001-11-30	-1891
2001-12-31	-1878
2002-01-31	-2591
2002-02-28	-2613
2002-03-31	-3054
2002-04-30	-3633
2002-05-31	-3773
2002-06-30	-4026
2002-07-31	-4035
2002-08-31	-4064
2002-09-30	-4136
2002-10-31	-4153
2002-11-30	-4183
2002-12-31	-4454
2003-01-31	-5460
2003-02-28	-5521
2003-03-31	-6691
2003-04-30	-6856
2003-05-31	-7274
2003-06-30	-7122
2003-07-31	-6956
2003-08-31	-6793
2003-09-30	-7251
2003-10-31	-7228
2003-11-30	-7454
2003-12-31	-7889
2004-01-31	-6260
2004-02-29	-6305
2004-03-31	-7503
2004-04-30	-7297
2004-05-31	-7437
2004-06-30	-7413
2004-07-31	-7362
2004-08-31	-7467
2004-09-30	-7639
2004-10-31	-7852
2004-11-30	-8228
2004-12-31	-8444
2005-01-31	-6616
2005-02-28	-6665
2005-03-31	-7847
2005-04-30	-7841
2005-05-31	-7523
2005-06-30	-7405
2005-07-31	-7423
2005-08-31	-7533
2005-09-30	-7388
2005-10-31	-7331
2005-11-30	-7216
2005-12-31	-7235
2006-01-31	-7254
2006-02-28	-7132
2006-03-31	-8428
2006-04-30	-8782
2006-05-31	-8978
2006-06-30	-8944
2006-07-31	-8962
2006-08-31	-9014
2006-09-30	-8940
2006-10-31	-9025
2006-11-30	-9401
2006-12-31	-9348
2007-01-31	-6387
2007-02-28	-6522
2007-03-31	-8578
2007-04-30	-8765
2007-05-31	-8663
2007-06-30	-8712
2007-07-31	-8852
2007-08-31	-8877
2007-09-30	-9215
2007-10-31	-9383
2007-11-30	-9555
2007-12-31	-9609
2008-01-31	-6574
2008-02-29	-6714
2008-03-31	-8839
2008-04-30	-8717
2008-05-31	-8710
2008-06-30	-8790
2008-07-31	-8792
2008-08-31	-8564
2008-09-30	-8391
2008-10-31	-8022
2008-11-30	-8083
2008-12-31	-8514
2009-01-31	-4229
2009-02-28	-4222
2009-03-31	-6126
2009-04-30	-6140
2009-05-31	-6163
2009-06-30	-6169
2009-07-31	-6194
2009-08-31	-6210
2009-09-30	-6223
2009-10-31	-6239
2009-11-30	-6264
2009-12-31	-6240
2010-01-31	-6268
2010-02-28	-6280
2010-03-31	-6079
2010-04-30	-6087
2010-05-31	-6091
2010-06-30	-6117
2010-07-31	-6154
2010-08-31	-6169
2010-09-30	-6181
2010-10-31	-6196
2010-11-30	-6184
2010-12-31	-6180
2011-01-31	-6193
2011-02-28	-8191
2011-03-31	-6071
2011-04-30	-6101
2011-05-31	-6121
2011-06-30	-6118
2011-07-31	-6136
2011-08-31	-6152
2011-09-30	-6131
2011-10-31	-6135
2011-11-30	-6130
2011-12-31	-6137
2012-01-31	-6153
2012-02-29	-8150
2012-03-31	-6063
2012-04-30	-6069
2012-05-31	-6070
2012-06-30	-6077
2012-07-31	-6091
2012-08-31	-6093
2012-09-30	-6076
2012-10-31	-6074
2012-11-30	-6077
2012-12-31	-6077
2013-01-31	-6079
2013-02-28	-6080
2013-03-31	-6031
2013-04-30	-6040
2013-05-31	-6030
2013-06-30	-6023
2013-07-31	-6031
2013-08-31	-6028
2013-09-30	-6017
2013-10-31	-6025
2013-11-30	-6029
2013-12-31	-6020
2014-01-31	-6028
2014-02-28	-6031
2014-03-31	-6004
2014-04-30	-6013
2014-05-31	-6026
2014-06-30	-6022
2014-07-31	-6016
2014-08-31	-6025
2014-09-30	-6003
2014-10-31	-6015
2014-11-30	-6020
2014-12-31	-6012
2015-01-31	-6028
2015-02-28	-6022
2015-03-31	-6028
2015-04-30	-6028
2015-05-31	-6034
2015-06-30	-6035
2015-07-31	-6039
2015-08-31	-6041
2015-09-30	-6028
2015-10-31	-6024
2015-11-30	-6016
2015-12-31	-6013
2016-01-31	-6034
2016-02-29	-6036
2016-03-31	-6029
2016-04-30	-6033
2016-05-31	-6029
2016-06-30	-6059
2016-07-31	-6057
2016-08-31	-6050
2016-09-30	-6025
2016-10-31	-6019
2016-11-30	-6000
2016-12-31	-6002
2017-01-31	-6012
2017-02-28	-6023
2017-03-31	-5993
2017-04-30	-6007
2017-05-31	-6018
2017-06-30	-6018
2017-07-31	-6030
2017-08-31	-6042
2017-09-30	-5995
2017-10-31	-5996
2017-11-30	-5992
2017-12-31	-5993
2018-01-31	-5989
2018-02-28	-5992
2018-03-31	-5956
2018-04-30	-5948
2018-05-31	-5969
2018-06-30	-5975
2018-07-31	-5980
2018-08-31	-6000
2018-09-30	-5943
2018-10-31	-5953
2018-11-30	-5973
2018-12-31	-6006
2019-01-31	-6021
2019-02-28	-8028
2019-03-31	-6016
2019-04-30	-6027
2019-05-31	-6067
2019-06-30	-6098
2019-07-31	-6103
2019-08-31	-6113
2019-09-30	-6069
2019-10-31	-6084
2019-11-30	-6087
2019-12-31	-6097
2020-01-31	-6121
2020-02-29	-6128
2020-03-31	-4122
2020-04-30	-6134
2020-05-31	-6142
2020-06-30	-6148
2020-07-31	-6156
2020-08-31	-6131
2020-09-30	-6107
2020-10-31	-6102
2020-11-30	-6104
2020-12-31	-6109
2021-01-31	-6111
2021-02-28	-6084
2021-03-31	-6052
2021-04-30	-6050
2021-05-31	-6056
2021-06-30	-6047
2021-07-31	-6059
2021-08-31	-6033
2021-09-30	-6025
2021-10-31	-6005
2021-11-30	-6006
2021-12-31	-6001
2022-01-31	-5975
2022-02-28	-3939
2022-03-31	-5867
2022-04-30	-5829
2022-05-31	-5857
2022-06-30	-5831
2022-07-31	-5851
2022-08-31	-5811
2022-09-30	-5746
2022-10-31	-5735
2022-11-30	-5756
2022-12-31	-5783
2023-01-31	-5813
2023-02-28	-5808
2023-03-31	-7878
2023-04-30	-5903
2023-05-31	-5886
2023-06-30	-5867
2023-07-31	-5888
2023-08-31	-5910
2023-09-30	-5850
2023-10-31	-5869
2023-11-30	-5922
2023-12-31	-5973