Quarter	US dollars
1999-03-31	246
1999-06-30	152
1999-09-30	134
1999-12-31	125
2000-03-31	113
2000-06-30	102
2000-09-30	98
2000-12-31	357
2001-03-31	123
2001-06-30	119
2001-09-30	116
2001-12-31	101
2002-03-31	127
2002-06-30	162
2002-09-30	146
2002-12-31	141
2003-03-31	142
2003-06-30	160
2003-09-30	188
2003-12-31	202
2004-03-31	164
2004-06-30	182
2004-09-30	214
2004-12-31	233
2005-03-31	165
2005-06-30	202
2005-09-30	246
2005-12-31	215
2006-03-31	213
2006-06-30	204
2006-09-30	126
2006-12-31	149
2007-03-31	135
2007-06-30	133
2007-09-30	123
2007-12-31	144
2008-03-31	108
2008-06-30	214
2008-09-30	124
2008-12-31	72
2009-03-31	98
2009-06-30	89
2009-09-30	86
2009-12-31	124
2010-03-31	128
2010-06-30	110
2010-09-30	54
2010-12-31	60
2011-03-31	53
2011-06-30	57
2011-09-30	52
2011-12-31	50
2012-03-31	54
2012-06-30	59
2012-09-30	50
2012-12-31	56
2013-03-31	48
2013-06-30	54
2013-09-30	43
2013-12-31	40
2014-03-31	26
2014-06-30	26
2014-09-30	24
2014-12-31	26
2015-03-31	1
2015-06-30	5
2015-09-30	5
2015-12-31	1
2016-03-31	0
2016-06-30	1
2016-09-30	1
2016-12-31	1
2017-03-31	1
2017-06-30	1
2017-09-30	2
2017-12-31	14
2018-03-31	6
2018-06-30	3
2018-09-30	3
2018-12-31	2
2019-03-31	1
2019-06-30	1
2019-09-30	1
2019-12-31	1
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	1
2021-03-31	1
2021-06-30	1
2021-09-30	0
2021-12-31	0
2022-03-31	1
2022-06-30	1
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	3
2023-09-30	0