Quarter	US dollars
2004-12-31	12049
2005-03-31	11146
2005-06-30	12252
2005-09-30	13860
2005-12-31	12260
2006-03-31	11146
2006-06-30	11433
2006-09-30	9371
2006-12-31	10893
2007-03-31	11136
2007-06-30	10628
2007-09-30	11442
2007-12-31	10862
2008-03-31	13978
2008-06-30	14989
2008-09-30	11559
2008-12-31	8978
2009-03-31	11316
2009-06-30	12000
2009-09-30	11401
2009-12-31	9398
2010-03-31	9200
2010-06-30	8633
2010-09-30	9204
2010-12-31	7319
2011-03-31	9689
2011-06-30	8182
2011-09-30	7640
2011-12-31	6119
2012-03-31	5159
2012-06-30	4535
2012-09-30	4733
2012-12-31	4770
2013-03-31	5342
2013-06-30	4128
2013-09-30	3240
2013-12-31	4867
2014-03-31	5170
2014-06-30	4669
2014-09-30	3534
2014-12-31	3537
2015-03-31	3096
2015-06-30	3242
2015-09-30	3237
2015-12-31	2619
2016-03-31	2210
2016-06-30	3212
2016-09-30	2590
2016-12-31	1714
2017-03-31	1822
2017-06-30	2660
2017-09-30	1664
2017-12-31	1258
2018-03-31	2397
2018-06-30	2774
2018-09-30	1733
2018-12-31	1222
2019-03-31	1592
2019-06-30	1851
2019-09-30	1855
2019-12-31	2450
2020-03-31	2667
2020-06-30	2532
2020-09-30	1837
2020-12-31	1130
2021-03-31	1082
2021-06-30	495
2021-09-30	928
2021-12-31	737
2022-03-31	624
2022-06-30	824
2022-09-30	833
2022-12-31	1241
2023-03-31	981
2023-06-30	2197
2023-09-30	2139