Quarter	US dollars
2004-12-31	3836
2005-03-31	4628
2005-06-30	3807
2005-09-30	3214
2005-12-31	3365
2006-03-31	4208
2006-06-30	4324
2006-09-30	4473
2006-12-31	5061
2007-03-31	4941
2007-06-30	4729
2007-09-30	6546
2007-12-31	7141
2008-03-31	8423
2008-06-30	8585
2008-09-30	7166
2008-12-31	7507
2009-03-31	7762
2009-06-30	8659
2009-09-30	7346
2009-12-31	10315
2010-03-31	9220
2010-06-30	13871
2010-09-30	14870
2010-12-31	10509
2011-03-31	10799
2011-06-30	10101
2011-09-30	8444
2011-12-31	9791
2012-03-31	9482
2012-06-30	8659
2012-09-30	10836
2012-12-31	8789
2013-03-31	9356
2013-06-30	9250
2013-09-30	8706
2013-12-31	7750
2014-03-31	15327
2014-06-30	14242
2014-09-30	16922
2014-12-31	16022
2015-03-31	14644
2015-06-30	13107
2015-09-30	13800
2015-12-31	12974
2016-03-31	14726
2016-06-30	14667
2016-09-30	14650
2016-12-31	12390
2017-03-31	13034
2017-06-30	15292
2017-09-30	14186
2017-12-31	14119
2018-03-31	15070
2018-06-30	13390
2018-09-30	13332
2018-12-31	12394
2019-03-31	13810
2019-06-30	14162
2019-09-30	13515
2019-12-31	14099
2020-03-31	16472
2020-06-30	16101
2020-09-30	10719
2020-12-31	11067
2021-03-31	10946
2021-06-30	10226
2021-09-30	10126
2021-12-31	11713
2022-03-31	10978
2022-06-30	8943
2022-09-30	9473
2022-12-31	9710
2023-03-31	10277
2023-06-30	10990
2023-09-30	10077