Quarter	US dollars
2004-12-31	1841
2005-03-31	1870
2005-06-30	1411
2005-09-30	2305
2005-12-31	1396
2006-03-31	1795
2006-06-30	1326
2006-09-30	1332
2006-12-31	1566
2007-03-31	2658
2007-06-30	1782
2007-09-30	2791
2007-12-31	5770
2008-03-31	8026
2008-06-30	5025
2008-09-30	5361
2008-12-31	3161
2009-03-31	2323
2009-06-30	3420
2009-09-30	2257
2009-12-31	2464
2010-03-31	2424
2010-06-30	2922
2010-09-30	3096
2010-12-31	4044
2011-03-31	3509
2011-06-30	4879
2011-09-30	4764
2011-12-31	4937
2012-03-31	4929
2012-06-30	4707
2012-09-30	4554
2012-12-31	2918
2013-03-31	3499
2013-06-30	2639
2013-09-30	4552
2013-12-31	4390
2014-03-31	4842
2014-06-30	4278
2014-09-30	5467
2014-12-31	5177
2015-03-31	6277
2015-06-30	6436
2015-09-30	6036
2015-12-31	4646
2016-03-31	5547
2016-06-30	3937
2016-09-30	3028
2016-12-31	3836
2017-03-31	3612
2017-06-30	3244
2017-09-30	2949
2017-12-31	2747
2018-03-31	4622
2018-06-30	5626
2018-09-30	4666
2018-12-31	4283
2019-03-31	5450
2019-06-30	4670
2019-09-30	5253
2019-12-31	5214
2020-03-31	4527
2020-06-30	4803
2020-09-30	3648
2020-12-31	6400
2021-03-31	5114
2021-06-30	6090
2021-09-30	5375
2021-12-31	5288
2022-03-31	5414
2022-06-30	7137
2022-09-30	5810
2022-12-31	4868
2023-03-31	5448
2023-06-30	6113
2023-09-30	7011