Quarter	US dollars
1999-03-31	206
1999-06-30	144
1999-09-30	221
1999-12-31	143
2000-03-31	186
2000-06-30	93
2000-09-30	117
2000-12-31	110
2001-03-31	125
2001-06-30	133
2001-09-30	135
2001-12-31	99
2002-03-31	103
2002-06-30	87
2002-09-30	93
2002-12-31	141
2003-03-31	187
2003-06-30	218
2003-09-30	212
2003-12-31	171
2004-03-31	95
2004-06-30	392
2004-09-30	418
2004-12-31	459
2005-03-31	1233
2005-06-30	916
2005-09-30	1469
2005-12-31	1357
2006-03-31	1760
2006-06-30	2088
2006-09-30	1864
2006-12-31	1430
2007-03-31	1584
2007-06-30	1617
2007-09-30	1674
2007-12-31	1552
2008-03-31	1763
2008-06-30	1830
2008-09-30	1583
2008-12-31	746
2009-03-31	551
2009-06-30	785
2009-09-30	434
2009-12-31	532
2010-03-31	293
2010-06-30	288
2010-09-30	237
2010-12-31	192
2011-03-31	685
2011-06-30	782
2011-09-30	930
2011-12-31	872
2012-03-31	864
2012-06-30	1243
2012-09-30	470
2012-12-31	536
2013-03-31	710
2013-06-30	1275
2013-09-30	957
2013-12-31	859
2014-03-31	1212
2014-06-30	1474
2014-09-30	2054
2014-12-31	1489
2015-03-31	1648
2015-06-30	1640
2015-09-30	2889
2015-12-31	1865
2016-03-31	1802
2016-06-30	1929
2016-09-30	2694
2016-12-31	1444
2017-03-31	4958
2017-06-30	2530
2017-09-30	3238
2017-12-31	2872
2018-03-31	7582
2018-06-30	3490
2018-09-30	3222
2018-12-31	3513
2019-03-31	4077
2019-06-30	3809
2019-09-30	3110
2019-12-31	2677
2020-03-31	4977
2020-06-30	3605
2020-09-30	3384
2020-12-31	4329
2021-03-31	5451
2021-06-30	5100
2021-09-30	5411
2021-12-31	5562
2022-03-31	6000
2022-06-30	5804
2022-09-30	5589
2022-12-31	7450
2023-03-31	5745
2023-06-30	4505
2023-09-30	3251