Quarter	US dollars
2004-12-31	1469
2005-03-31	261
2005-06-30	1712
2005-09-30	1916
2005-12-31	2005
2006-03-31	2510
2006-06-30	2800
2006-09-30	3505
2006-12-31	3855
2007-03-31	3213
2007-06-30	2372
2007-09-30	3015
2007-12-31	3789
2008-03-31	4512
2008-06-30	5337
2008-09-30	6041
2008-12-31	2749
2009-03-31	1039
2009-06-30	2567
2009-09-30	3157
2009-12-31	5227
2010-03-31	4480
2010-06-30	7126
2010-09-30	6756
2010-12-31	5398
2011-03-31	5165
2011-06-30	6239
2011-09-30	5138
2011-12-31	5476
2012-03-31	5512
2012-06-30	6767
2012-09-30	6309
2012-12-31	5625
2013-03-31	5110
2013-06-30	7452
2013-09-30	7198
2013-12-31	5158
2014-03-31	4879
2014-06-30	4801
2014-09-30	6092
2014-12-31	4508
2015-03-31	3529
2015-06-30	3737
2015-09-30	5591
2015-12-31	4466
2016-03-31	4359
2016-06-30	4014
2016-09-30	3830
2016-12-31	3327
2017-03-31	3678
2017-06-30	2840
2017-09-30	2711
2017-12-31	2135
2018-03-31	2283
2018-06-30	3458
2018-09-30	2291
2018-12-31	3225
2019-03-31	3196
2019-06-30	2689
2019-09-30	3090
2019-12-31	3688
2020-03-31	3985
2020-06-30	3006
2020-09-30	4156
2020-12-31	2801
2021-03-31	3602
2021-06-30	4292
2021-09-30	3976
2021-12-31	2344
2022-03-31	2417
2022-06-30	4421
2022-09-30	3859
2022-12-31	2022
2023-03-31	3781
2023-06-30	6115
2023-09-30	5539