Quarter	US dollars
1997-09-30	222
1997-12-31	201
1998-03-31	199
1998-06-30	192
1998-09-30	193
1998-12-31	210
1999-03-31	188
1999-06-30	154
1999-09-30	164
1999-12-31	38
2000-03-31	147
2000-06-30	37
2000-09-30	10
2000-12-31	13
2001-03-31	74
2001-06-30	8
2001-09-30	14
2001-12-31	10
2002-03-31	65
2002-06-30	11
2002-09-30	1
2002-12-31	1
2003-03-31	1
2003-06-30	8
2003-09-30	3
2003-12-31	2
2004-03-31	2
2004-06-30	2
2004-09-30	3
2004-12-31	2
2005-03-31	8
2005-06-30	8
2005-09-30	2
2005-12-31	11
2006-03-31	8
2006-06-30	16
2006-09-30	12
2006-12-31	9
2007-03-31	8
2007-06-30	8
2007-09-30	8
2007-12-31	17
2008-03-31	9
2008-06-30	8
2008-09-30	9
2008-12-31	6
2009-03-31	4
2009-06-30	6
2009-09-30	4
2009-12-31	7
2010-03-31	9
2010-06-30	8
2010-09-30	10
2010-12-31	9
2011-03-31	9
2011-06-30	9
2011-09-30	8
2011-12-31	7
2012-03-31	9
2012-06-30	9
2012-09-30	10
2012-12-31	12
2013-03-31	8
2013-06-30	6
2013-09-30	7
2013-12-31	179
2014-03-31	525
2014-06-30	1247
2014-09-30	1707
2014-12-31	2146
2015-03-31	2251
2015-06-30	2135
2015-09-30	2151
2015-12-31	1822
2016-03-31	2094
2016-06-30	2663
2016-09-30	1883
2016-12-31	2494
2017-03-31	2291
2017-06-30	3348
2017-09-30	5002
2017-12-31	5692
2018-03-31	6419
2018-06-30	6485
2018-09-30	6340
2018-12-31	5503
2019-03-31	5682
2019-06-30	5308
2019-09-30	5185
2019-12-31	4968
2020-03-31	4488
2020-06-30	5866
2020-09-30	7903
2020-12-31	7574
2021-03-31	10395
2021-06-30	13638
2021-09-30	10559
2021-12-31	13210
2022-03-31	11553
2022-06-30	11027
2022-09-30	11302
2022-12-31	12516
2023-03-31	13597
2023-06-30	12837
2023-09-30	12273
2023-12-31	13960