Quarter	US dollars
2004-12-31	3425
2005-03-31	3155
2005-06-30	3580
2005-09-30	3637
2005-12-31	3219
2006-03-31	3542
2006-06-30	2946
2006-09-30	2685
2006-12-31	3053
2007-03-31	2877
2007-06-30	4248
2007-09-30	4018
2007-12-31	3323
2008-03-31	4496
2008-06-30	4601
2008-09-30	3962
2008-12-31	3825
2009-03-31	3983
2009-06-30	4145
2009-09-30	4134
2009-12-31	3938
2010-03-31	5269
2010-06-30	5591
2010-09-30	6211
2010-12-31	4609
2011-03-31	5349
2011-06-30	4033
2011-09-30	3198
2011-12-31	2533
2012-03-31	1787
2012-06-30	1140
2012-09-30	929
2012-12-31	1074
2013-03-31	2030
2013-06-30	1541
2013-09-30	593
2013-12-31	1836
2014-03-31	2051
2014-06-30	1964
2014-09-30	1336
2014-12-31	1150
2015-03-31	1262
2015-06-30	1625
2015-09-30	1466
2015-12-31	926
2016-03-31	973
2016-06-30	1775
2016-09-30	1384
2016-12-31	578
2017-03-31	742
2017-06-30	1593
2017-09-30	706
2017-12-31	563
2018-03-31	1205
2018-06-30	1106
2018-09-30	661
2018-12-31	756
2019-03-31	543
2019-06-30	412
2019-09-30	365
2019-12-31	395
2020-03-31	520
2020-06-30	344
2020-09-30	517
2020-12-31	341
2021-03-31	414
2021-06-30	583
2021-09-30	719
2021-12-31	322
2022-03-31	134
2022-06-30	156
2022-09-30	30
2022-12-31	574
2023-03-31	856
2023-06-30	2172
2023-09-30	1818