Quarter	US dollars
2004-12-31	628
2005-03-31	612
2005-06-30	606
2005-09-30	1870
2005-12-31	1603
2006-03-31	1497
2006-06-30	10826
2006-09-30	10720
2006-12-31	14159
2007-03-31	13668
2007-06-30	13981
2007-09-30	16910
2007-12-31	15877
2008-03-31	12706
2008-06-30	12546
2008-09-30	11348
2008-12-31	8620
2009-03-31	2488
2009-06-30	3282
2009-09-30	3392
2009-12-31	3546
2010-03-31	3522
2010-06-30	3298
2010-09-30	4203
2010-12-31	5268
2011-03-31	6830
2011-06-30	6602
2011-09-30	6607
2011-12-31	7567
2012-03-31	9697
2012-06-30	8497
2012-09-30	8875
2012-12-31	8687
2013-03-31	14815
2013-06-30	14767
2013-09-30	16215
2013-12-31	16192
2014-03-31	15688
2014-06-30	16099
2014-09-30	16133
2014-12-31	19738
2015-03-31	17130
2015-06-30	16127
2015-09-30	16819
2015-12-31	14515
2016-03-31	13133
2016-06-30	14922
2016-09-30	14750
2016-12-31	13993
2017-03-31	15260
2017-06-30	11972
2017-09-30	14826
2017-12-31	16597
2018-03-31	16593
2018-06-30	15589
2018-09-30	14048
2018-12-31	14359
2019-03-31	19803
2019-06-30	21892
2019-09-30	21586
2019-12-31	22531
2020-03-31	18933
2020-06-30	20321
2020-09-30	23443
2020-12-31	29210
2021-03-31	30809
2021-06-30	36355
2021-09-30	33671
2021-12-31	35899
2022-03-31	32390
2022-06-30	35528
2022-09-30	29879
2022-12-31	36460
2023-03-31	37286
2023-06-30	39957
2023-09-30	35049