Quarter	US dollars
2004-12-31	3934
2005-03-31	4501
2005-06-30	5196
2005-09-30	6014
2005-12-31	4590
2006-03-31	5235
2006-06-30	5916
2006-09-30	5734
2006-12-31	5818
2007-03-31	5905
2007-06-30	8074
2007-09-30	7730
2007-12-31	8489
2008-03-31	7982
2008-06-30	8908
2008-09-30	7139
2008-12-31	8078
2009-03-31	6730
2009-06-30	3144
2009-09-30	4109
2009-12-31	3197
2010-03-31	2997
2010-06-30	3290
2010-09-30	2644
2010-12-31	2398
2011-03-31	4525
2011-06-30	3296
2011-09-30	3351
2011-12-31	3213
2012-03-31	3076
2012-06-30	3018
2012-09-30	3173
2012-12-31	3007
2013-03-31	2816
2013-06-30	2410
2013-09-30	2632
2013-12-31	2973
2014-03-31	3481
2014-06-30	3450
2014-09-30	3479
2014-12-31	3440
2015-03-31	2947
2015-06-30	2677
2015-09-30	3096
2015-12-31	2530
2016-03-31	2464
2016-06-30	2204
2016-09-30	2644
2016-12-31	1749
2017-03-31	1789
2017-06-30	1746
2017-09-30	1253
2017-12-31	1681
2018-03-31	1636
2018-06-30	2077
2018-09-30	1865
2018-12-31	1809
2019-03-31	1616
2019-06-30	1389
2019-09-30	1440
2019-12-31	1721
2020-03-31	1993
2020-06-30	1381
2020-09-30	1932
2020-12-31	4006
2021-03-31	2305
2021-06-30	3306
2021-09-30	2930
2021-12-31	2115
2022-03-31	1686
2022-06-30	1850
2022-09-30	1642
2022-12-31	1511
2023-03-31	2976
2023-06-30	1750
2023-09-30	3330