Quarter	US dollars
2004-12-31	376
2005-03-31	327
2005-06-30	613
2005-09-30	685
2005-12-31	618
2006-03-31	548
2006-06-30	505
2006-09-30	493
2006-12-31	485
2007-03-31	486
2007-06-30	488
2007-09-30	471
2007-12-31	709
2008-03-31	1139
2008-06-30	1304
2008-09-30	1588
2008-12-31	1373
2009-03-31	1549
2009-06-30	1736
2009-09-30	2269
2009-12-31	2256
2010-03-31	2231
2010-06-30	2228
2010-09-30	2765
2010-12-31	2818
2011-03-31	1536
2011-06-30	2129
2011-09-30	2246
2011-12-31	2381
2012-03-31	2827
2012-06-30	3093
2012-09-30	3475
2012-12-31	3323
2013-03-31	3445
2013-06-30	3414
2013-09-30	3381
2013-12-31	3592
2014-03-31	3361
2014-06-30	3339
2014-09-30	3599
2014-12-31	3571
2015-03-31	3606
2015-06-30	3547
2015-09-30	4271
2015-12-31	4493
2016-03-31	4853
2016-06-30	4814
2016-09-30	3771
2016-12-31	4166
2017-03-31	3833
2017-06-30	3433
2017-09-30	3499
2017-12-31	3796
2018-03-31	3129
2018-06-30	3200
2018-09-30	3183
2018-12-31	3241
2019-03-31	2867
2019-06-30	2773
2019-09-30	3873
2019-12-31	3988
2020-03-31	4283
2020-06-30	4562
2020-09-30	5029
2020-12-31	4981
2021-03-31	4878
2021-06-30	4458
2021-09-30	4634
2021-12-31	4296
2022-03-31	4446
2022-06-30	4354
2022-09-30	4088
2022-12-31	4251
2023-03-31	4077
2023-06-30	3779
2023-09-30	3793