Quarter	US dollars
2004-12-31	23
2005-03-31	28
2005-06-30	38
2005-09-30	37
2005-12-31	43
2006-03-31	42
2006-06-30	41
2006-09-30	37
2006-12-31	37
2007-03-31	45
2007-06-30	62
2007-09-30	79
2007-12-31	86
2008-03-31	105
2008-06-30	139
2008-09-30	96
2008-12-31	92
2009-03-31	97
2009-06-30	117
2009-09-30	125
2009-12-31	119
2010-03-31	121
2010-06-30	129
2010-09-30	206
2010-12-31	202
2011-03-31	276
2011-06-30	220
2011-09-30	229
2011-12-31	224
2012-03-31	238
2012-06-30	209
2012-09-30	233
2012-12-31	222
2013-03-31	226
2013-06-30	220
2013-09-30	211
2013-12-31	185
2014-03-31	170
2014-06-30	181
2014-09-30	175
2014-12-31	64
2015-03-31	56
2015-06-30	49
2015-09-30	44
2015-12-31	21
2016-03-31	19
2016-06-30	17
2016-09-30	14
2016-12-31	23
2017-03-31	16
2017-06-30	16
2017-09-30	11
2017-12-31	15
2018-03-31	14
2018-06-30	12
2018-09-30	9
2018-12-31	13
2019-03-31	16
2019-06-30	15
2019-09-30	21
2019-12-31	25
2020-03-31	24
2020-06-30	20
2020-09-30	21
2020-12-31	23
2021-03-31	26
2021-06-30	29
2021-09-30	31
2021-12-31	22
2022-03-31	21
2022-06-30	20
2022-09-30	14
2022-12-31	14
2023-03-31	14
2023-06-30	12
2023-09-30	12