Quarter	US dollars
2004-12-31	2333
2005-03-31	3146
2005-06-30	3936
2005-09-30	4677
2005-12-31	4164
2006-03-31	4286
2006-06-30	5678
2006-09-30	5289
2006-12-31	6251
2007-03-31	8526
2007-06-30	7713
2007-09-30	10757
2007-12-31	11384
2008-03-31	13002
2008-06-30	13984
2008-09-30	13663
2008-12-31	15420
2009-03-31	11006
2009-06-30	10480
2009-09-30	11305
2009-12-31	9976
2010-03-31	9303
2010-06-30	7765
2010-09-30	9544
2010-12-31	7594
2011-03-31	7682
2011-06-30	7513
2011-09-30	8414
2011-12-31	8480
2012-03-31	1512
2012-06-30	1373
2012-09-30	904
2012-12-31	121
2013-03-31	35
2013-06-30	-38
2013-09-30	-40
2013-12-31	159
2014-03-31	132
2014-06-30	198
2014-09-30	10
2014-12-31	153
2015-03-31	306
2015-06-30	261
2015-09-30	320
2015-12-31	375
2016-03-31	394
2016-06-30	199
2016-09-30	290
2016-12-31	360
2017-03-31	285
2017-06-30	681
2017-09-30	792
2017-12-31	634
2018-03-31	126
2018-06-30	24
2018-09-30	360
2018-12-31	323
2019-03-31	308
2019-06-30	305
2019-09-30	306
2019-12-31	567
2020-03-31	470
2020-06-30	480
2020-09-30	513
2020-12-31	343
2021-03-31	250
2021-06-30	531
2021-09-30	488
2021-12-31	639
2022-03-31	571
2022-06-30	610
2022-09-30	656
2022-12-31	380
2023-03-31	566
2023-06-30	1475
2023-09-30	1928