Quarter	US dollars
2004-12-31	2321
2005-03-31	3715
2005-06-30	3243
2005-09-30	3615
2005-12-31	4587
2006-03-31	6083
2006-06-30	5036
2006-09-30	5778
2006-12-31	9636
2007-03-31	10528
2007-06-30	10530
2007-09-30	12622
2007-12-31	11257
2008-03-31	10949
2008-06-30	12464
2008-09-30	10456
2008-12-31	8212
2009-03-31	7253
2009-06-30	7575
2009-09-30	7398
2009-12-31	8428
2010-03-31	1668
2010-06-30	3167
2010-09-30	3865
2010-12-31	2779
2011-03-31	1876
2011-06-30	2567
2011-09-30	2189
2011-12-31	1832
2012-03-31	2127
2012-06-30	2121
2012-09-30	2117
2012-12-31	2120
2013-03-31	3806
2013-06-30	2468
2013-09-30	2844
2013-12-31	2616
2014-03-31	2529
2014-06-30	3406
2014-09-30	3622
2014-12-31	2660
2015-03-31	2515
2015-06-30	2430
2015-09-30	3116
2015-12-31	2580
2016-03-31	2566
2016-06-30	2547
2016-09-30	2392
2016-12-31	2764
2017-03-31	2754
2017-06-30	2615
2017-09-30	2646
2017-12-31	2602
2018-03-31	2916
2018-06-30	2919
2018-09-30	3515
2018-12-31	3134
2019-03-31	2867
2019-06-30	2761
2019-09-30	3282
2019-12-31	2968
2020-03-31	2192
2020-06-30	1374
2020-09-30	1422
2020-12-31	2393
2021-03-31	1904
2021-06-30	2041
2021-09-30	1807
2021-12-31	2152
2022-03-31	1764
2022-06-30	1718
2022-09-30	1774
2022-12-31	2086
2023-03-31	1683
2023-06-30	1882
2023-09-30	1710