Quarter	US dollars
1999-03-31	26
1999-06-30	64
1999-09-30	70
1999-12-31	96
2000-03-31	73
2000-06-30	51
2000-09-30	57
2000-12-31	58
2001-03-31	78
2001-06-30	73
2001-09-30	37
2001-12-31	43
2002-03-31	43
2002-06-30	40
2002-09-30	57
2002-12-31	24
2003-03-31	51
2003-06-30	48
2003-09-30	30
2003-12-31	18
2004-03-31	53
2004-06-30	34
2004-09-30	74
2004-12-31	64
2005-03-31	79
2005-06-30	55
2005-09-30	69
2005-12-31	141
2006-03-31	268
2006-06-30	315
2006-09-30	351
2006-12-31	314
2007-03-31	346
2007-06-30	176
2007-09-30	162
2007-12-31	185
2008-03-31	159
2008-06-30	191
2008-09-30	144
2008-12-31	103
2009-03-31	86
2009-06-30	134
2009-09-30	27
2009-12-31	174
2010-03-31	333
2010-06-30	353
2010-09-30	353
2010-12-31	372
2011-03-31	401
2011-06-30	550
2011-09-30	578
2011-12-31	543
2012-03-31	599
2012-06-30	577
2012-09-30	602
2012-12-31	621
2013-03-31	801
2013-06-30	613
2013-09-30	601
2013-12-31	588
2014-03-31	669
2014-06-30	815
2014-09-30	701
2014-12-31	523
2015-03-31	518
2015-06-30	409
2015-09-30	298
2015-12-31	389
2016-03-31	379
2016-06-30	528
2016-09-30	464
2016-12-31	464
2017-03-31	437
2017-06-30	499
2017-09-30	276
2017-12-31	268
2018-03-31	230
2018-06-30	197
2018-09-30	290
2018-12-31	176
2019-03-31	297
2019-06-30	355
2019-09-30	153
2019-12-31	199
2020-03-31	293
2020-06-30	137
2020-09-30	247
2020-12-31	309
2021-03-31	268
2021-06-30	395
2021-09-30	413
2021-12-31	450
2022-03-31	509
2022-06-30	565
2022-09-30	459
2022-12-31	491
2023-03-31	288
2023-06-30	306
2023-09-30	105