Quarter	US dollars
1999-09-30	21
1999-12-31	23
2000-03-31	46
2000-06-30	45
2000-09-30	46
2000-12-31	43
2001-03-31	34
2001-06-30	18
2001-09-30	21
2001-12-31	19
2002-03-31	20
2002-06-30	37
2002-09-30	39
2002-12-31	37
2003-03-31	46
2003-06-30	53
2003-09-30	86
2003-12-31	322
2004-03-31	48
2004-06-30	36
2004-09-30	38
2004-12-31	50
2005-03-31	66
2005-06-30	73
2005-09-30	614
2005-12-31	271
2006-03-31	442
2006-06-30	618
2006-09-30	622
2006-12-31	660
2007-03-31	451
2007-06-30	915
2007-09-30	990
2007-12-31	1623
2008-03-31	1532
2008-06-30	1544
2008-09-30	1738
2008-12-31	1331
2009-03-31	443
2009-06-30	515
2009-09-30	430
2009-12-31	543
2010-03-31	526
2010-06-30	649
2010-09-30	840
2010-12-31	736
2011-03-31	971
2011-06-30	808
2011-09-30	3307
2011-12-31	931
2012-03-31	815
2012-06-30	673
2012-09-30	334
2012-12-31	307
2013-03-31	575
2013-06-30	564
2013-09-30	497
2013-12-31	144
2014-03-31	175
2014-06-30	255
2014-09-30	149
2014-12-31	142
2015-03-31	238
2015-06-30	190
2015-09-30	167
2015-12-31	153
2016-03-31	332
2016-06-30	392
2016-09-30	260
2016-12-31	290
2017-03-31	264
2017-06-30	299
2017-09-30	227
2017-12-31	544
2018-03-31	1176
2018-06-30	962
2018-09-30	1099
2018-12-31	870
2019-03-31	701
2019-06-30	213
2019-09-30	276
2019-12-31	370
2020-03-31	463
2020-06-30	345
2020-09-30	256
2020-12-31	281
2021-03-31	272
2021-06-30	184
2021-09-30	239
2021-12-31	191
2022-03-31	157
2022-06-30	236
2022-09-30	907
2022-12-31	557
2023-03-31	1138
2023-06-30	724
2023-09-30	564