Quarter	US dollars
2004-12-31	626
2005-03-31	775
2005-06-30	825
2005-09-30	861
2005-12-31	851
2006-03-31	945
2006-06-30	947
2006-09-30	919
2006-12-31	994
2007-03-31	1275
2007-06-30	1388
2007-09-30	1567
2007-12-31	1571
2008-03-31	1813
2008-06-30	2070
2008-09-30	2008
2008-12-31	1656
2009-03-31	1820
2009-06-30	1798
2009-09-30	1678
2009-12-31	1863
2010-03-31	1991
2010-06-30	2421
2010-09-30	2266
2010-12-31	2668
2011-03-31	2921
2011-06-30	2958
2011-09-30	3186
2011-12-31	3408
2012-03-31	3866
2012-06-30	4020
2012-09-30	3927
2012-12-31	4102
2013-03-31	4249
2013-06-30	4450
2013-09-30	4128
2013-12-31	4195
2014-03-31	3748
2014-06-30	3999
2014-09-30	4361
2014-12-31	4281
2015-03-31	4129
2015-06-30	3685
2015-09-30	3591
2015-12-31	3383
2016-03-31	3530
2016-06-30	3326
2016-09-30	3344
2016-12-31	3397
2017-03-31	3677
2017-06-30	4165
2017-09-30	4523
2017-12-31	4869
2018-03-31	5125
2018-06-30	5283
2018-09-30	5344
2018-12-31	5798
2019-03-31	6183
2019-06-30	5975
2019-09-30	6158
2019-12-31	6292
2020-03-31	6154
2020-06-30	6145
2020-09-30	6060
2020-12-31	6243
2021-03-31	6934
2021-06-30	7624
2021-09-30	7643
2021-12-31	7759
2022-03-31	8022
2022-06-30	7651
2022-09-30	7711
2022-12-31	7557
2023-03-31	7641
2023-06-30	7326
2023-09-30	7282