Month	US dollars
1999-07-31	758.063
1999-08-31	674.225
1999-09-30	771.684
1999-10-31	771.942
1999-11-30	887.297
1999-12-31	881.411
2000-01-31	826.183
2000-02-29	856.367
2000-03-31	994.235
2000-04-30	946.792
2000-05-31	950.803
2000-06-30	1020.782
2000-07-31	980.242
2000-08-31	953.996
2000-09-30	991.322
2000-10-31	950.335
2000-11-30	1007.219
2000-12-31	1004.564
2001-01-31	901.357
2001-02-28	841.123
2001-03-31	793.33
2001-04-30	857.526
2001-05-31	869.346
2001-06-30	838.84
2001-07-31	861.048
2001-08-31	818.511
2001-09-30	852.207
2001-10-31	768.756
2001-11-30	751.183
2001-12-31	744.08
2002-01-31	759.689
2002-02-28	798.844
2002-03-31	811.088
2002-04-30	781.64
2002-05-31	764.479
2002-06-30	586.474
2002-07-31	537.668
2002-08-31	552.052
2002-09-30	565.643
2002-10-31	817.46
2002-11-30	860.308
2002-12-31	957.858
2003-01-31	969.778
2003-02-28	754.562
2003-03-31	586.866
2003-04-30	466.798
2003-05-31	558.714
2003-06-30	534.88
2003-07-31	512.96
2003-08-31	627.216
2003-09-30	744.518
2003-10-31	741.16
2003-11-30	682.048
2003-12-31	565.638
2004-01-31	490.715
2004-02-29	426.174
2004-03-31	497.488
2004-04-30	431.266
2004-05-31	436.383
2004-06-30	502.341
2004-07-31	496.972
2004-08-31	432.352
2004-09-30	257.851
2004-10-31	209.413
2004-11-30	223.101
2004-12-31	215.54
2005-01-31	207.74
2005-02-28	214.285
2005-03-31	210.373
2005-04-30	214.408
2005-05-31	190.649
2005-06-30	201.012
2005-07-31	197.334
2005-08-31	199.336
2005-09-30	217.688
2005-10-31	217.458
2005-11-30	228.045
2005-12-31	153.812
2006-01-31	170.528
2006-02-28	166.705
2006-03-31	174.5
2006-04-30	193.09
2006-05-31	153.903
2006-06-30	144.537
2006-07-31	149.013
2006-08-31	146.893
2006-09-30	141.18
2006-10-31	142.24
2006-11-30	152.321
2006-12-31	149.728
2007-01-31	153.223
2007-02-28	156.459
2007-03-31	155.892
2007-04-30	159.492
2007-05-31	134.02
2007-06-30	132.257
2007-07-31	135.365
2007-08-31	136.41
2007-09-30	151.01
2007-10-31	160.472
2007-11-30	159.152
2007-12-31	170.111
2008-01-31	187.863
2008-02-29	197.638
2008-03-31	190.016
2008-04-30	177.271
2008-05-31	80.776
2008-06-30	0
2008-07-31	0
2008-08-31	0
2008-09-30	0
2008-10-31	0
2008-11-30	0
2008-12-31	0
2009-01-31	0
2009-02-28	0
2009-03-31	0
2009-04-30	0
2009-05-31	0
2009-06-30	0
2009-07-31	0
2009-08-31	0
2009-09-30	0
2009-10-31	0
2009-11-30	0
2009-12-31	0
2010-01-31	0
2010-02-28	0
2010-03-31	0
2010-04-30	0
2010-05-31	0
2010-06-30	0
2010-07-31	0
2010-08-31	0
2010-09-30	0
2010-10-31	0
2010-11-30	0
2010-12-31	0
2011-01-31	0
2011-02-28	0
2011-03-31	0
2011-04-30	0
2011-05-31	0
2011-06-30	0
2011-07-31	0
2011-08-31	0
2011-09-30	0
2011-10-31	0
2011-11-30	0
2011-12-31	0
2012-01-31	0
2012-02-29	0
2012-03-31	0
2012-04-30	0
2012-05-31	0
2012-06-30	0
2012-07-31	0
2012-08-31	0
2012-09-30	0
2012-10-31	0
2012-11-30	0
2012-12-31	0
2013-01-31	0
2013-02-28	0
2013-03-31	0
2013-04-30	0
2013-05-31	0
2013-06-30	0
2013-07-31	0
2013-08-31	0
2013-09-30	0
2013-10-31	0
2013-11-30	0
2013-12-31	0
2014-01-31	0
2014-02-28	0
2014-03-31	0
2014-04-30	0
2014-05-31	0
2014-06-30	0
2014-07-31	0
2014-08-31	0
2014-09-30	0
2014-10-31	0
2014-11-30	0
2014-12-31	0
2015-01-31	0
2015-02-28	0
2015-03-31	0
2015-04-30	0
2015-05-31	0
2015-06-30	0
2015-07-31	0
2015-08-31	0
2015-09-30	0
2015-10-31	0
2015-11-30	0
2015-12-31	0
2016-01-31	0
2016-02-29	0
2016-03-31	0
2016-04-30	0
2016-05-31	0
2016-06-30	0
2016-07-31	0
2016-08-31	0
2016-09-30	0
2016-10-31	0
2016-11-30	0
2016-12-31	0
2017-01-31	0
2017-02-28	0
2017-03-31	0
2017-04-30	0
2017-05-31	0
2017-06-30	0
2017-07-31	0
2017-08-31	0
2017-09-30	0
2017-10-31	0
2017-11-30	0
2017-12-31	0
2018-01-31	0
2018-02-28	0
2018-03-31	0
2018-04-30	0
2018-05-31	0
2018-06-30	0
2018-07-31	0
2018-08-31	0
2018-09-30	0
2018-10-31	0
2018-11-30	0
2018-12-31	0
2019-01-31	0
2019-02-28	0
2019-03-31	0
2019-04-30	0
2019-05-31	0
2019-06-30	0
2019-07-31	0
2019-08-31	0
2019-09-30	0
2019-10-31	0
2019-11-30	0
2019-12-31	0
2020-01-31	0
2020-02-29	0
2020-03-31	0
2020-04-30	0
2020-05-31	0
2020-06-30	0
2020-07-31	0
2020-08-31	0
2020-09-30	0
2020-10-31	0
2020-11-30	0
2020-12-31	0
2021-01-31	0
2021-02-28	0
2021-03-31	0
2021-04-30	0
2021-05-31	0
2021-06-30	0
2021-07-31	0
2021-08-31	0
2021-09-30	0
2021-10-31	0
2021-11-30	0
2021-12-31	0
2022-01-31	0
2022-02-28	0
2022-03-31	0
2022-04-30	0
2022-05-31	0
2022-06-30	0
2022-07-31	0
2022-08-31	0
2022-09-30	0
2022-10-31	0
2022-11-30	0
2022-12-31	0
2023-01-31	0
2023-02-28	0
2023-03-31	0
2023-04-30	0
2023-05-31	0
2023-06-30	0
2023-07-31	0
2023-08-31	0
2023-09-30	0
2023-10-31	0
2023-11-30	0
2023-12-31	0