Quarter	US dollars
2004-12-31	2292
2005-03-31	2955
2005-06-30	3284
2005-09-30	3248
2005-12-31	2760
2006-03-31	2950
2006-06-30	3079
2006-09-30	3671
2006-12-31	3660
2007-03-31	3944
2007-06-30	3734
2007-09-30	4205
2007-12-31	4376
2008-03-31	4808
2008-06-30	4882
2008-09-30	5546
2008-12-31	4503
2009-03-31	4344
2009-06-30	6027
2009-09-30	5051
2009-12-31	5082
2010-03-31	5961
2010-06-30	6748
2010-09-30	8736
2010-12-31	8255
2011-03-31	9799
2011-06-30	11193
2011-09-30	11768
2011-12-31	11509
2012-03-31	12225
2012-06-30	12466
2012-09-30	12147
2012-12-31	12923
2013-03-31	12656
2013-06-30	12461
2013-09-30	11469
2013-12-31	11474
2014-03-31	12180
2014-06-30	11896
2014-09-30	11483
2014-12-31	11054
2015-03-31	10963
2015-06-30	10715
2015-09-30	9965
2015-12-31	9343
2016-03-31	9734
2016-06-30	9845
2016-09-30	9960
2016-12-31	9235
2017-03-31	11050
2017-06-30	11965
2017-09-30	11390
2017-12-31	11558
2018-03-31	10971
2018-06-30	10557
2018-09-30	10343
2018-12-31	10778
2019-03-31	9982
2019-06-30	10345
2019-09-30	9757
2019-12-31	10559
2020-03-31	9915
2020-06-30	9629
2020-09-30	9348
2020-12-31	9886
2021-03-31	9934
2021-06-30	10598
2021-09-30	11274
2021-12-31	11651
2022-03-31	11189
2022-06-30	11156
2022-09-30	11561
2022-12-31	11318
2023-03-31	11668
2023-06-30	11419
2023-09-30	11583