Quarter	US dollars
1999-09-30	532
1999-12-31	555
2000-03-31	563
2000-06-30	837
2000-09-30	956
2000-12-31	1130
2001-03-31	1447
2001-06-30	1301
2001-09-30	1270
2001-12-31	1195
2002-03-31	1014
2002-06-30	2197
2002-09-30	1851
2002-12-31	2141
2003-03-31	1826
2003-06-30	2096
2003-09-30	2105
2003-12-31	2501
2004-03-31	2253
2004-06-30	1596
2004-09-30	1867
2004-12-31	2171
2005-03-31	1820
2005-06-30	2354
2005-09-30	2064
2005-12-31	1596
2006-03-31	1516
2006-06-30	2236
2006-09-30	1734
2006-12-31	2689
2007-03-31	2399
2007-06-30	3278
2007-09-30	3767
2007-12-31	3592
2008-03-31	6245
2008-06-30	6145
2008-09-30	6494
2008-12-31	10207
2009-03-31	6844
2009-06-30	6225
2009-09-30	6105
2009-12-31	5061
2010-03-31	4793
2010-06-30	7281
2010-09-30	7881
2010-12-31	5207
2011-03-31	5293
2011-06-30	4722
2011-09-30	5736
2011-12-31	4989
2012-03-31	4294
2012-06-30	4707
2012-09-30	4499
2012-12-31	3782
2013-03-31	3817
2013-06-30	2865
2013-09-30	2721
2013-12-31	2806
2014-03-31	3273
2014-06-30	3766
2014-09-30	4466
2014-12-31	4375
2015-03-31	4779
2015-06-30	3668
2015-09-30	3773
2015-12-31	3176
2016-03-31	3290
2016-06-30	3188
2016-09-30	4057
2016-12-31	2312
2017-03-31	3612
2017-06-30	3857
2017-09-30	3439
2017-12-31	3238
2018-03-31	4458
2018-06-30	3630
2018-09-30	3425
2018-12-31	1932
2019-03-31	2119
2019-06-30	2005
2019-09-30	2677
2019-12-31	2432
2020-03-31	2612
2020-06-30	2341
2020-09-30	1868
2020-12-31	2365
2021-03-31	1788
2021-06-30	1832
2021-09-30	1454
2021-12-31	1651
2022-03-31	2144
2022-06-30	2623
2022-09-30	3194
2022-12-31	2769
2023-03-31	1552
2023-06-30	1834
2023-09-30	1682