Quarter	US dollars
2004-12-31	1499
2005-03-31	2009
2005-06-30	1853
2005-09-30	2487
2005-12-31	2168
2006-03-31	4107
2006-06-30	4910
2006-09-30	6176
2006-12-31	7454
2007-03-31	8165
2007-06-30	7660
2007-09-30	7820
2007-12-31	8400
2008-03-31	5760
2008-06-30	5130
2008-09-30	4806
2008-12-31	1527
2009-03-31	1644
2009-06-30	2376
2009-09-30	2813
2009-12-31	2580
2010-03-31	3919
2010-06-30	3299
2010-09-30	4539
2010-12-31	4374
2011-03-31	6951
2011-06-30	7464
2011-09-30	4876
2011-12-31	4818
2012-03-31	6126
2012-06-30	4522
2012-09-30	6792
2012-12-31	10092
2013-03-31	7648
2013-06-30	5723
2013-09-30	4235
2013-12-31	4063
2014-03-31	2516
2014-06-30	3279
2014-09-30	3137
2014-12-31	3704
2015-03-31	3137
2015-06-30	3278
2015-09-30	3310
2015-12-31	3238
2016-03-31	4671
2016-06-30	4771
2016-09-30	4991
2016-12-31	3831
2017-03-31	4471
2017-06-30	5732
2017-09-30	5483
2017-12-31	4700
2018-03-31	5573
2018-06-30	4209
2018-09-30	3852
2018-12-31	3483
2019-03-31	4760
2019-06-30	4982
2019-09-30	3724
2019-12-31	3864
2020-03-31	3645
2020-06-30	3631
2020-09-30	3183
2020-12-31	4523
2021-03-31	2973
2021-06-30	1273
2021-09-30	1431
2021-12-31	585
2022-03-31	157
2022-06-30	122
2022-09-30	-65
2022-12-31	526
2023-03-31	696
2023-06-30	981
2023-09-30	722