Quarter	US dollars
2004-12-31	1236
2005-03-31	981
2005-06-30	1380
2005-09-30	1206
2005-12-31	1600
2006-03-31	2496
2006-06-30	2952
2006-09-30	2970
2006-12-31	3771
2007-03-31	4485
2007-06-30	5937
2007-09-30	4863
2007-12-31	8654
2008-03-31	6163
2008-06-30	5694
2008-09-30	4919
2008-12-31	3864
2009-03-31	3603
2009-06-30	4427
2009-09-30	4516
2009-12-31	3672
2010-03-31	4095
2010-06-30	4086
2010-09-30	3928
2010-12-31	4149
2011-03-31	3955
2011-06-30	4525
2011-09-30	4007
2011-12-31	3814
2012-03-31	3175
2012-06-30	3512
2012-09-30	4609
2012-12-31	3926
2013-03-31	4252
2013-06-30	4039
2013-09-30	3799
2013-12-31	3882
2014-03-31	3870
2014-06-30	3949
2014-09-30	4418
2014-12-31	3381
2015-03-31	3275
2015-06-30	3140
2015-09-30	3032
2015-12-31	3198
2016-03-31	2955
2016-06-30	2995
2016-09-30	3493
2016-12-31	3435
2017-03-31	3696
2017-06-30	6524
2017-09-30	6660
2017-12-31	6527
2018-03-31	6810
2018-06-30	4898
2018-09-30	4746
2018-12-31	4848
2019-03-31	6794
2019-06-30	7671
2019-09-30	7763
2019-12-31	8122
2020-03-31	5927
2020-06-30	6297
2020-09-30	7751
2020-12-31	7912
2021-03-31	8311
2021-06-30	8717
2021-09-30	8464
2021-12-31	8375
2022-03-31	8204
2022-06-30	6064
2022-09-30	5340
2022-12-31	4305
2023-03-31	4128
2023-06-30	5039
2023-09-30	4834