Quarter	US dollars
2004-12-31	3796
2005-03-31	3834
2005-06-30	3468
2005-09-30	3384
2005-12-31	3576
2006-03-31	3329
2006-06-30	3562
2006-09-30	3589
2006-12-31	3814
2007-03-31	3377
2007-06-30	3519
2007-09-30	3547
2007-12-31	3572
2008-03-31	3737
2008-06-30	3457
2008-09-30	3140
2008-12-31	3457
2009-03-31	3306
2009-06-30	3495
2009-09-30	4088
2009-12-31	2889
2010-03-31	2760
2010-06-30	2813
2010-09-30	2453
2010-12-31	2575
2011-03-31	3740
2011-06-30	1769
2011-09-30	3049
2011-12-31	2763
2012-03-31	2707
2012-06-30	3001
2012-09-30	3370
2012-12-31	3208
2013-03-31	2856
2013-06-30	2722
2013-09-30	2753
2013-12-31	2079
2014-03-31	2156
2014-06-30	2164
2014-09-30	2121
2014-12-31	2313
2015-03-31	1823
2015-06-30	2499
2015-09-30	1977
2015-12-31	1769
2016-03-31	1776
2016-06-30	1763
2016-09-30	1765
2016-12-31	1681
2017-03-31	1577
2017-06-30	2459
2017-09-30	2952
2017-12-31	3232
2018-03-31	3427
2018-06-30	3763
2018-09-30	4270
2018-12-31	3953
2019-03-31	3609
2019-06-30	3921
2019-09-30	4518
2019-12-31	5040
2020-03-31	4969
2020-06-30	4960
2020-09-30	5490
2020-12-31	5525
2021-03-31	5781
2021-06-30	6163
2021-09-30	5524
2021-12-31	5760
2022-03-31	7776
2022-06-30	7249
2022-09-30	6812
2022-12-31	8542
2023-03-31	8728
2023-06-30	7860
2023-09-30	8705