Quarter	US dollars
2004-12-31	3114
2005-03-31	3932
2005-06-30	3736
2005-09-30	3456
2005-12-31	4460
2006-03-31	2654
2006-06-30	3279
2006-09-30	2771
2006-12-31	3683
2007-03-31	2214
2007-06-30	3188
2007-09-30	1834
2007-12-31	9449
2008-03-31	4406
2008-06-30	7779
2008-09-30	4936
2008-12-31	3708
2009-03-31	2568
2009-06-30	2019
2009-09-30	1167
2009-12-31	2350
2010-03-31	1900
2010-06-30	2219
2010-09-30	2151
2010-12-31	1556
2011-03-31	1686
2011-06-30	1636
2011-09-30	2002
2011-12-31	1892
2012-03-31	1342
2012-06-30	1470
2012-09-30	1533
2012-12-31	1411
2013-03-31	1922
2013-06-30	1890
2013-09-30	2049
2013-12-31	932
2014-03-31	1452
2014-06-30	1352
2014-09-30	1530
2014-12-31	1322
2015-03-31	1195
2015-06-30	1647
2015-09-30	2207
2015-12-31	1126
2016-03-31	1248
2016-06-30	1458
2016-09-30	1073
2016-12-31	1475
2017-03-31	999
2017-06-30	742
2017-09-30	1949
2017-12-31	1246
2018-03-31	1538
2018-06-30	1290
2018-09-30	1758
2018-12-31	2001
2019-03-31	1664
2019-06-30	2297
2019-09-30	3334
2019-12-31	3125
2020-03-31	2391
2020-06-30	2457
2020-09-30	3064
2020-12-31	2185
2021-03-31	2098
2021-06-30	1774
2021-09-30	3026
2021-12-31	2450
2022-03-31	2911
2022-06-30	2178
2022-09-30	2497
2022-12-31	1697
2023-03-31	1036
2023-06-30	1265
2023-09-30	2293