Quarter	US dollars
2004-12-31	3394
2005-03-31	2637
2005-06-30	4200
2005-09-30	3375
2005-12-31	3198
2006-03-31	2656
2006-06-30	3329
2006-09-30	2559
2006-12-31	3086
2007-03-31	3138
2007-06-30	5072
2007-09-30	6049
2007-12-31	6986
2008-03-31	9798
2008-06-30	9684
2008-09-30	8616
2008-12-31	15839
2009-03-31	10285
2009-06-30	9135
2009-09-30	9404
2009-12-31	7575
2010-03-31	7637
2010-06-30	9375
2010-09-30	10483
2010-12-31	8150
2011-03-31	7390
2011-06-30	7875
2011-09-30	12240
2011-12-31	11961
2012-03-31	10891
2012-06-30	9978
2012-09-30	9018
2012-12-31	8089
2013-03-31	7635
2013-06-30	4638
2013-09-30	5164
2013-12-31	4479
2014-03-31	5832
2014-06-30	5179
2014-09-30	6410
2014-12-31	5581
2015-03-31	6546
2015-06-30	5717
2015-09-30	5091
2015-12-31	3951
2016-03-31	4753
2016-06-30	3911
2016-09-30	3541
2016-12-31	3147
2017-03-31	2440
2017-06-30	2801
2017-09-30	2365
2017-12-31	2303
2018-03-31	2327
2018-06-30	1973
2018-09-30	2239
2018-12-31	2472
2019-03-31	2936
2019-06-30	3384
2019-09-30	8167
2019-12-31	6009
2020-03-31	7633
2020-06-30	7802
2020-09-30	7752
2020-12-31	8082
2021-03-31	6451
2021-06-30	6082
2021-09-30	5101
2021-12-31	4822
2022-03-31	5720
2022-06-30	8280
2022-09-30	10433
2022-12-31	10542
2023-03-31	9711
2023-06-30	9832
2023-09-30	10124