Quarter	US dollars
2004-12-31	683
2005-03-31	750
2005-06-30	764
2005-09-30	879
2005-12-31	1519
2006-03-31	1807
2006-06-30	2206
2006-09-30	1904
2006-12-31	1759
2007-03-31	2691
2007-06-30	3483
2007-09-30	2793
2007-12-31	3050
2008-03-31	3784
2008-06-30	4092
2008-09-30	4079
2008-12-31	4701
2009-03-31	4285
2009-06-30	3781
2009-09-30	3672
2009-12-31	3236
2010-03-31	3504
2010-06-30	3775
2010-09-30	4886
2010-12-31	4510
2011-03-31	4423
2011-06-30	4324
2011-09-30	5076
2011-12-31	4549
2012-03-31	4452
2012-06-30	4527
2012-09-30	4205
2012-12-31	4870
2013-03-31	4937
2013-06-30	5789
2013-09-30	6306
2013-12-31	7666
2014-03-31	8026
2014-06-30	6890
2014-09-30	7305
2014-12-31	5884
2015-03-31	5133
2015-06-30	4697
2015-09-30	5011
2015-12-31	4130
2016-03-31	2900
2016-06-30	2789
2016-09-30	2567
2016-12-31	1993
2017-03-31	2119
2017-06-30	1938
2017-09-30	2236
2017-12-31	2105
2018-03-31	1807
2018-06-30	1608
2018-09-30	1815
2018-12-31	1642
2019-03-31	1697
2019-06-30	1433
2019-09-30	1411
2019-12-31	886
2020-03-31	732
2020-06-30	761
2020-09-30	680
2020-12-31	576
2021-03-31	528
2021-06-30	430
2021-09-30	376
2021-12-31	228
2022-03-31	259
2022-06-30	114
2022-09-30	89
2022-12-31	73
2023-03-31	73
2023-06-30	68
2023-09-30	44