Quarter	US dollars
2004-12-31	2985
2005-03-31	2544
2005-06-30	3610
2005-09-30	4346
2005-12-31	3778
2006-03-31	3119
2006-06-30	4346
2006-09-30	4648
2006-12-31	6061
2007-03-31	7357
2007-06-30	7073
2007-09-30	6744
2007-12-31	6815
2008-03-31	9620
2008-06-30	11326
2008-09-30	11350
2008-12-31	11235
2009-03-31	7362
2009-06-30	5448
2009-09-30	6388
2009-12-31	6542
2010-03-31	7482
2010-06-30	8422
2010-09-30	7827
2010-12-31	15854
2011-03-31	12202
2011-06-30	14272
2011-09-30	13105
2011-12-31	10812
2012-03-31	10341
2012-06-30	10655
2012-09-30	12422
2012-12-31	10356
2013-03-31	15703
2013-06-30	15167
2013-09-30	17901
2013-12-31	15226
2014-03-31	16448
2014-06-30	18290
2014-09-30	20216
2014-12-31	21221
2015-03-31	19166
2015-06-30	16525
2015-09-30	14355
2015-12-31	12811
2016-03-31	13475
2016-06-30	11820
2016-09-30	6242
2016-12-31	5977
2017-03-31	6477
2017-06-30	6391
2017-09-30	7168
2017-12-31	6135
2018-03-31	6146
2018-06-30	6648
2018-09-30	6952
2018-12-31	6275
2019-03-31	6770
2019-06-30	3560
2019-09-30	3951
2019-12-31	4293
2020-03-31	3762
2020-06-30	4450
2020-09-30	3696
2020-12-31	3168
2021-03-31	3294
2021-06-30	3199
2021-09-30	3650
2021-12-31	3942
2022-03-31	3633
2022-06-30	4005
2022-09-30	4845
2022-12-31	4948
2023-03-31	5225
2023-06-30	4446
2023-09-30	4382