Quarter	US dollars
2004-12-31	507
2005-03-31	518
2005-06-30	479
2005-09-30	451
2005-12-31	445
2006-03-31	409
2006-06-30	322
2006-09-30	295
2006-12-31	468
2007-03-31	459
2007-06-30	417
2007-09-30	458
2007-12-31	201
2008-03-31	213
2008-06-30	145
2008-09-30	141
2008-12-31	122
2009-03-31	125
2009-06-30	107
2009-09-30	106
2009-12-31	115
2010-03-31	105
2010-06-30	183
2010-09-30	164
2010-12-31	97
2011-03-31	104
2011-06-30	103
2011-09-30	97
2011-12-31	83
2012-03-31	66
2012-06-30	56
2012-09-30	61
2012-12-31	44
2013-03-31	43
2013-06-30	39
2013-09-30	39
2013-12-31	38
2014-03-31	32
2014-06-30	27
2014-09-30	24
2014-12-31	31
2015-03-31	27
2015-06-30	19
2015-09-30	18
2015-12-31	16
2016-03-31	17
2016-06-30	15
2016-09-30	14
2016-12-31	18
2017-03-31	20
2017-06-30	18
2017-09-30	16
2017-12-31	15
2018-03-31	13
2018-06-30	11
2018-09-30	8
2018-12-31	3
2019-03-31	3
2019-06-30	3
2019-09-30	2
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	1
2021-12-31	115
2022-03-31	138
2022-06-30	130
2022-09-30	1
2022-12-31	1
2023-03-31	1
2023-06-30	1
2023-09-30	1