Quarter	US dollars
2004-12-31	547
2005-03-31	681
2005-06-30	760
2005-09-30	801
2005-12-31	812
2006-03-31	905
2006-06-30	912
2006-09-30	891
2006-12-31	955
2007-03-31	1255
2007-06-30	1354
2007-09-30	1526
2007-12-31	1533
2008-03-31	1767
2008-06-30	2012
2008-09-30	1964
2008-12-31	1620
2009-03-31	1773
2009-06-30	1727
2009-09-30	1630
2009-12-31	1817
2010-03-31	1975
2010-06-30	2286
2010-09-30	2070
2010-12-31	2425
2011-03-31	2688
2011-06-30	2680
2011-09-30	2988
2011-12-31	3154
2012-03-31	3562
2012-06-30	3638
2012-09-30	3697
2012-12-31	3854
2013-03-31	3924
2013-06-30	4025
2013-09-30	3773
2013-12-31	3881
2014-03-31	3425
2014-06-30	3717
2014-09-30	3996
2014-12-31	3960
2015-03-31	3765
2015-06-30	3330
2015-09-30	3128
2015-12-31	2896
2016-03-31	3032
2016-06-30	2881
2016-09-30	2853
2016-12-31	2902
2017-03-31	3211
2017-06-30	3622
2017-09-30	3876
2017-12-31	4119
2018-03-31	4273
2018-06-30	4397
2018-09-30	4416
2018-12-31	4811
2019-03-31	5179
2019-06-30	5101
2019-09-30	5385
2019-12-31	5280
2020-03-31	5168
2020-06-30	5056
2020-09-30	5114
2020-12-31	5339
2021-03-31	5834
2021-06-30	6322
2021-09-30	6234
2021-12-31	6321
2022-03-31	6498
2022-06-30	6275
2022-09-30	6307
2022-12-31	6115
2023-03-31	6264
2023-06-30	6041
2023-09-30	6010