Quarter	US dollars
2004-12-31	1642
2005-03-31	1921
2005-06-30	1723
2005-09-30	1893
2005-12-31	1978
2006-03-31	1906
2006-06-30	2060
2006-09-30	2302
2006-12-31	2644
2007-03-31	3246
2007-06-30	3824
2007-09-30	3965
2007-12-31	4288
2008-03-31	4088
2008-06-30	4420
2008-09-30	4209
2008-12-31	3798
2009-03-31	3743
2009-06-30	3819
2009-09-30	4096
2009-12-31	3701
2010-03-31	3190
2010-06-30	3534
2010-09-30	4232
2010-12-31	6555
2011-03-31	6082
2011-06-30	6146
2011-09-30	6152
2011-12-31	6619
2012-03-31	8665
2012-06-30	8448
2012-09-30	7374
2012-12-31	13017
2013-03-31	40231
2013-06-30	38770
2013-09-30	31442
2013-12-31	23736
2014-03-31	20678
2014-06-30	19802
2014-09-30	19292
2014-12-31	18101
2015-03-31	18041
2015-06-30	17434
2015-09-30	16282
2015-12-31	15400
2016-03-31	17107
2016-06-30	16292
2016-09-30	13989
2016-12-31	13987
2017-03-31	13474
2017-06-30	12372
2017-09-30	11754
2017-12-31	11913
2018-03-31	10306
2018-06-30	9567
2018-09-30	12467
2018-12-31	8966
2019-03-31	9221
2019-06-30	8417
2019-09-30	8782
2019-12-31	9297
2020-03-31	9442
2020-06-30	9855
2020-09-30	10099
2020-12-31	9653
2021-03-31	9625
2021-06-30	9506
2021-09-30	9711
2021-12-31	8923
2022-03-31	11629
2022-06-30	10759
2022-09-30	11302
2022-12-31	11392
2023-03-31	11735
2023-06-30	10874
2023-09-30	11209