Quarter	US dollars
1999-09-30	102
1999-12-31	123
2000-03-31	108
2000-06-30	88
2000-09-30	93
2000-12-31	173
2001-03-31	127
2001-06-30	122
2001-09-30	115
2001-12-31	306
2002-03-31	269
2002-06-30	461
2002-09-30	217
2002-12-31	309
2003-03-31	269
2003-06-30	300
2003-09-30	301
2003-12-31	714
2004-03-31	298
2004-06-30	221
2004-09-30	217
2004-12-31	336
2005-03-31	342
2005-06-30	396
2005-09-30	416
2005-12-31	769
2006-03-31	673
2006-06-30	780
2006-09-30	566
2006-12-31	990
2007-03-31	1567
2007-06-30	1242
2007-09-30	2433
2007-12-31	2913
2008-03-31	3609
2008-06-30	4032
2008-09-30	6275
2008-12-31	10180
2009-03-31	8729
2009-06-30	6287
2009-09-30	4513
2009-12-31	3785
2010-03-31	3505
2010-06-30	4765
2010-09-30	4816
2010-12-31	5625
2011-03-31	3535
2011-06-30	3889
2011-09-30	5369
2011-12-31	4304
2012-03-31	3517
2012-06-30	3697
2012-09-30	2808
2012-12-31	3083
2013-03-31	2837
2013-06-30	3317
2013-09-30	3020
2013-12-31	3684
2014-03-31	3962
2014-06-30	4247
2014-09-30	4755
2014-12-31	6178
2015-03-31	6396
2015-06-30	4999
2015-09-30	4659
2015-12-31	4013
2016-03-31	3940
2016-06-30	3888
2016-09-30	3042
2016-12-31	2785
2017-03-31	2546
2017-06-30	2342
2017-09-30	1914
2017-12-31	1966
2018-03-31	1857
2018-06-30	1139
2018-09-30	1860
2018-12-31	1966
2019-03-31	1547
2019-06-30	1930
2019-09-30	2368
2019-12-31	2139
2020-03-31	3385
2020-06-30	2718
2020-09-30	2940
2020-12-31	2864
2021-03-31	1926
2021-06-30	1707
2021-09-30	1471
2021-12-31	1480
2022-03-31	1106
2022-06-30	1518
2022-09-30	1232
2022-12-31	1118
2023-03-31	1002
2023-06-30	910
2023-09-30	728