Quarter	US dollars
2004-12-31	23768
2005-03-31	26685
2005-06-30	26160
2005-09-30	30050
2005-12-31	27062
2006-03-31	32668
2006-06-30	29827
2006-09-30	36135
2006-12-31	34312
2007-03-31	42954
2007-06-30	39486
2007-09-30	47708
2007-12-31	41140
2008-03-31	50705
2008-06-30	42905
2008-09-30	38415
2008-12-31	28076
2009-03-31	23269
2009-06-30	27286
2009-09-30	33809
2009-12-31	39018
2010-03-31	42530
2010-06-30	31268
2010-09-30	37276
2010-12-31	18705
2011-03-31	14919
2011-06-30	16758
2011-09-30	17796
2011-12-31	11774
2012-03-31	11155
2012-06-30	11705
2012-09-30	10318
2012-12-31	11198
2013-03-31	10991
2013-06-30	10784
2013-09-30	7993
2013-12-31	8128
2014-03-31	5170
2014-06-30	6225
2014-09-30	5363
2014-12-31	6054
2015-03-31	6357
2015-06-30	6079
2015-09-30	4544
2015-12-31	3918
2016-03-31	2531
2016-06-30	1687
2016-09-30	1732
2016-12-31	1426
2017-03-31	1420
2017-06-30	1890
2017-09-30	1786
2017-12-31	1829
2018-03-31	1727
2018-06-30	1495
2018-09-30	1596
2018-12-31	2196
2019-03-31	1919
2019-06-30	2344
2019-09-30	2247
2019-12-31	2305
2020-03-31	1858
2020-06-30	2338
2020-09-30	1861
2020-12-31	2956
2021-03-31	2830
2021-06-30	2732
2021-09-30	2137
2021-12-31	1501
2022-03-31	2263
2022-06-30	1331
2022-09-30	1183
2022-12-31	1185
2023-03-31	1226
2023-06-30	1524
2023-09-30	1265