Quarter	US dollars
1999-09-30	109
1999-12-31	106
2000-03-31	112
2000-06-30	120
2000-09-30	135
2000-12-31	136
2001-03-31	145
2001-06-30	145
2001-09-30	134
2001-12-31	119
2002-03-31	120
2002-06-30	110
2002-09-30	109
2002-12-31	13
2003-03-31	11
2003-06-30	10
2003-09-30	17
2003-12-31	16
2004-03-31	17
2004-06-30	22
2004-09-30	27
2004-12-31	33
2005-03-31	43
2005-06-30	47
2005-09-30	48
2005-12-31	55
2006-03-31	56
2006-06-30	57
2006-09-30	52
2006-12-31	74
2007-03-31	92
2007-06-30	116
2007-09-30	128
2007-12-31	115
2008-03-31	141
2008-06-30	185
2008-09-30	155
2008-12-31	135
2009-03-31	130
2009-06-30	163
2009-09-30	170
2009-12-31	171
2010-03-31	185
2010-06-30	196
2010-09-30	328
2010-12-31	316
2011-03-31	321
2011-06-30	279
2011-09-30	274
2011-12-31	267
2012-03-31	265
2012-06-30	235
2012-09-30	254
2012-12-31	255
2013-03-31	241
2013-06-30	226
2013-09-30	219
2013-12-31	208
2014-03-31	190
2014-06-30	190
2014-09-30	182
2014-12-31	76
2015-03-31	74
2015-06-30	68
2015-09-30	79
2015-12-31	86
2016-03-31	89
2016-06-30	21
2016-09-30	18
2016-12-31	27
2017-03-31	23
2017-06-30	19
2017-09-30	16
2017-12-31	20
2018-03-31	17
2018-06-30	15
2018-09-30	13
2018-12-31	15
2019-03-31	18
2019-06-30	17
2019-09-30	22
2019-12-31	25
2020-03-31	24
2020-06-30	20
2020-09-30	32
2020-12-31	35
2021-03-31	39
2021-06-30	41
2021-09-30	43
2021-12-31	34
2022-03-31	33
2022-06-30	30
2022-09-30	25
2022-12-31	26
2023-03-31	25
2023-06-30	24
2023-09-30	23