Quarter	US dollars
2004-12-31	7883
2005-03-31	8616
2005-06-30	8774
2005-09-30	7572
2005-12-31	8892
2006-03-31	9344
2006-06-30	10458
2006-09-30	10886
2006-12-31	12382
2007-03-31	16163
2007-06-30	13467
2007-09-30	14989
2007-12-31	14745
2008-03-31	17244
2008-06-30	15131
2008-09-30	15356
2008-12-31	10138
2009-03-31	9476
2009-06-30	9660
2009-09-30	8966
2009-12-31	7307
2010-03-31	6529
2010-06-30	6461
2010-09-30	5623
2010-12-31	5078
2011-03-31	4926
2011-06-30	5138
2011-09-30	4424
2011-12-31	5818
2012-03-31	5077
2012-06-30	6463
2012-09-30	6397
2012-12-31	6559
2013-03-31	4601
2013-06-30	5765
2013-09-30	5626
2013-12-31	5519
2014-03-31	5100
2014-06-30	6726
2014-09-30	5241
2014-12-31	8923
2015-03-31	8392
2015-06-30	7323
2015-09-30	8932
2015-12-31	7670
2016-03-31	7412
2016-06-30	6215
2016-09-30	5620
2016-12-31	6035
2017-03-31	6122
2017-06-30	7028
2017-09-30	7394
2017-12-31	6469
2018-03-31	7053
2018-06-30	7320
2018-09-30	7594
2018-12-31	7074
2019-03-31	5238
2019-06-30	5887
2019-09-30	5400
2019-12-31	4943
2020-03-31	7380
2020-06-30	6831
2020-09-30	6883
2020-12-31	6483
2021-03-31	7265
2021-06-30	8640
2021-09-30	7515
2021-12-31	9272
2022-03-31	9803
2022-06-30	12039
2022-09-30	8228
2022-12-31	8465
2023-03-31	10097
2023-06-30	12095
2023-09-30	11031