Quarter	US dollars
2004-12-31	2736
2005-03-31	2921
2005-06-30	2052
2005-09-30	2648
2005-12-31	2326
2006-03-31	3032
2006-06-30	2674
2006-09-30	2765
2006-12-31	3695
2007-03-31	3028
2007-06-30	2697
2007-09-30	4825
2007-12-31	3848
2008-03-31	4303
2008-06-30	4285
2008-09-30	7275
2008-12-31	7533
2009-03-31	6551
2009-06-30	6376
2009-09-30	4488
2009-12-31	4954
2010-03-31	4935
2010-06-30	4608
2010-09-30	4823
2010-12-31	5450
2011-03-31	5588
2011-06-30	3990
2011-09-30	4429
2011-12-31	4089
2012-03-31	3780
2012-06-30	5798
2012-09-30	5789
2012-12-31	5319
2013-03-31	5046
2013-06-30	4318
2013-09-30	4565
2013-12-31	4249
2014-03-31	4663
2014-06-30	4644
2014-09-30	4243
2014-12-31	4127
2015-03-31	3890
2015-06-30	3986
2015-09-30	4002
2015-12-31	8142
2016-03-31	8047
2016-06-30	6576
2016-09-30	6360
2016-12-31	5278
2017-03-31	5778
2017-06-30	5640
2017-09-30	5796
2017-12-31	5289
2018-03-31	4680
2018-06-30	5655
2018-09-30	5567
2018-12-31	4990
2019-03-31	6041
2019-06-30	5765
2019-09-30	6406
2019-12-31	4761
2020-03-31	4718
2020-06-30	5192
2020-09-30	6436
2020-12-31	6451
2021-03-31	10925
2021-06-30	9905
2021-09-30	8016
2021-12-31	4757
2022-03-31	4120
2022-06-30	2693
2022-09-30	4057
2022-12-31	6252
2023-03-31	6511
2023-06-30	8888
2023-09-30	7881