Quarter	US dollars
1999-03-31	415
1999-06-30	759
1999-09-30	625
1999-12-31	423
2000-03-31	475
2000-06-30	458
2000-09-30	521
2000-12-31	476
2001-03-31	461
2001-06-30	859
2001-09-30	891
2001-12-31	615
2002-03-31	609
2002-06-30	724
2002-09-30	909
2002-12-31	781
2003-03-31	1277
2003-06-30	3015
2003-09-30	2548
2003-12-31	2043
2004-03-31	1237
2004-06-30	1788
2004-09-30	2408
2004-12-31	3151
2005-03-31	1293
2005-06-30	1884
2005-09-30	3393
2005-12-31	3183
2006-03-31	1908
2006-06-30	6867
2006-09-30	985
2006-12-31	4572
2007-03-31	1574
2007-06-30	5158
2007-09-30	3142
2007-12-31	5921
2008-03-31	3426
2008-06-30	19167
2008-09-30	1818
2008-12-31	2241
2009-03-31	2838
2009-06-30	3027
2009-09-30	4604
2009-12-31	5063
2010-03-31	1727
2010-06-30	1786
2010-09-30	1976
2010-12-31	1583
2011-03-31	2347
2011-06-30	1672
2011-09-30	3118
2011-12-31	4185
2012-03-31	3397
2012-06-30	3307
2012-09-30	3540
2012-12-31	3343
2013-03-31	3190
2013-06-30	5392
2013-09-30	2802
2013-12-31	3128
2014-03-31	4519
2014-06-30	6738
2014-09-30	6295
2014-12-31	4017
2015-03-31	4520
2015-06-30	6528
2015-09-30	6306
2015-12-31	5701
2016-03-31	5652
2016-06-30	4096
2016-09-30	4708
2016-12-31	5671
2017-03-31	4827
2017-06-30	7244
2017-09-30	4968
2017-12-31	5026
2018-03-31	6143
2018-06-30	5396
2018-09-30	4886
2018-12-31	4940
2019-03-31	5183
2019-06-30	3312
2019-09-30	3461
2019-12-31	3691
2020-03-31	4282
2020-06-30	3728
2020-09-30	5610
2020-12-31	3205
2021-03-31	2894
2021-06-30	2166
2021-09-30	2068
2021-12-31	1757
2022-03-31	1968
2022-06-30	1881
2022-09-30	2402
2022-12-31	2773
2023-03-31	2624
2023-06-30	2514
2023-09-30	2696