Quarter	US dollars
2004-12-31	814
2005-03-31	885
2005-06-30	703
2005-09-30	1201
2005-12-31	857
2006-03-31	2454
2006-06-30	2922
2006-09-30	3645
2006-12-31	3982
2007-03-31	3562
2007-06-30	4009
2007-09-30	4018
2007-12-31	4300
2008-03-31	5670
2008-06-30	5144
2008-09-30	5756
2008-12-31	3406
2009-03-31	2903
2009-06-30	3350
2009-09-30	5513
2009-12-31	4342
2010-03-31	5293
2010-06-30	5440
2010-09-30	7770
2010-12-31	10880
2011-03-31	11809
2011-06-30	15449
2011-09-30	12868
2011-12-31	9911
2012-03-31	15816
2012-06-30	13749
2012-09-30	13467
2012-12-31	15162
2013-03-31	14100
2013-06-30	11621
2013-09-30	15282
2013-12-31	16047
2014-03-31	15506
2014-06-30	11982
2014-09-30	12863
2014-12-31	14305
2015-03-31	13733
2015-06-30	11125
2015-09-30	7998
2015-12-31	8265
2016-03-31	9442
2016-06-30	10422
2016-09-30	9181
2016-12-31	6165
2017-03-31	7588
2017-06-30	5527
2017-09-30	6660
2017-12-31	5458
2018-03-31	8479
2018-06-30	6562
2018-09-30	6483
2018-12-31	8074
2019-03-31	10893
2019-06-30	10535
2019-09-30	11188
2019-12-31	11255
2020-03-31	5117
2020-06-30	5995
2020-09-30	6025
2020-12-31	6695
2021-03-31	6207
2021-06-30	5264
2021-09-30	4516
2021-12-31	5562
2022-03-31	5639
2022-06-30	5313
2022-09-30	5031
2022-12-31	6770
2023-03-31	7443
2023-06-30	7526
2023-09-30	8474