Quarter	US dollars
2004-12-31	21
2005-03-31	25
2005-06-30	29
2005-09-30	28
2005-12-31	19
2006-03-31	42
2006-06-30	85
2006-09-30	88
2006-12-31	53
2007-03-31	75
2007-06-30	70
2007-09-30	61
2007-12-31	48
2008-03-31	48
2008-06-30	46
2008-09-30	46
2008-12-31	39
2009-03-31	39
2009-06-30	35
2009-09-30	37
2009-12-31	36
2010-03-31	534
2010-06-30	488
2010-09-30	1490
2010-12-31	125
2011-03-31	587
2011-06-30	755
2011-09-30	623
2011-12-31	439
2012-03-31	439
2012-06-30	336
2012-09-30	128
2012-12-31	78
2013-03-31	134
2013-06-30	94
2013-09-30	118
2013-12-31	172
2014-03-31	122
2014-06-30	87
2014-09-30	94
2014-12-31	61
2015-03-31	45
2015-06-30	53
2015-09-30	76
2015-12-31	68
2016-03-31	66
2016-06-30	-3
2016-09-30	81
2016-12-31	84
2017-03-31	85
2017-06-30	117
2017-09-30	119
2017-12-31	122
2018-03-31	95
2018-06-30	91
2018-09-30	95
2018-12-31	100
2019-03-31	106
2019-06-30	103
2019-09-30	100
2019-12-31	112
2020-03-31	91
2020-06-30	88
2020-09-30	84
2020-12-31	94
2021-03-31	86
2021-06-30	102
2021-09-30	85
2021-12-31	57
2022-03-31	75
2022-06-30	70
2022-09-30	64
2022-12-31	56
2023-03-31	48
2023-06-30	45
2023-09-30	50