Quarter	US dollars
2004-12-31	2901
2005-03-31	4055
2005-06-30	5155
2005-09-30	5658
2005-12-31	5213
2006-03-31	8544
2006-06-30	17305
2006-09-30	15695
2006-12-31	16768
2007-03-31	20327
2007-06-30	31769
2007-09-30	35092
2007-12-31	51339
2008-03-31	49415
2008-06-30	49100
2008-09-30	43954
2008-12-31	64673
2009-03-31	39766
2009-06-30	20030
2009-09-30	17631
2009-12-31	12917
2010-03-31	15205
2010-06-30	21792
2010-09-30	5587
2010-12-31	8634
2011-03-31	4219
2011-06-30	4081
2011-09-30	6066
2011-12-31	4499
2012-03-31	3989
2012-06-30	4009
2012-09-30	1985
2012-12-31	1955
2013-03-31	1544
2013-06-30	2727
2013-09-30	1600
2013-12-31	1729
2014-03-31	2723
2014-06-30	4676
2014-09-30	4541
2014-12-31	5855
2015-03-31	5611
2015-06-30	4132
2015-09-30	5186
2015-12-31	2817
2016-03-31	3830
2016-06-30	3974
2016-09-30	3196
2016-12-31	4370
2017-03-31	2289
2017-06-30	2638
2017-09-30	2654
2017-12-31	6343
2018-03-31	5919
2018-06-30	2940
2018-09-30	3645
2018-12-31	2628
2019-03-31	2679
2019-06-30	3078
2019-09-30	5469
2019-12-31	3803
2020-03-31	2633
2020-06-30	2264
2020-09-30	1573
2020-12-31	1800
2021-03-31	2285
2021-06-30	3227
2021-09-30	3287
2021-12-31	3418
2022-03-31	5920
2022-06-30	8143
2022-09-30	8096
2022-12-31	5691
2023-03-31	4348
2023-06-30	5217
2023-09-30	4391