Quarter	US dollars
2004-12-31	1941
2005-03-31	1771
2005-06-30	1771
2005-09-30	1710
2005-12-31	2362
2006-03-31	2307
2006-06-30	2589
2006-09-30	2388
2006-12-31	2638
2007-03-31	2744
2007-06-30	2540
2007-09-30	3278
2007-12-31	3130
2008-03-31	2705
2008-06-30	3425
2008-09-30	2197
2008-12-31	1547
2009-03-31	1768
2009-06-30	1897
2009-09-30	1892
2009-12-31	1796
2010-03-31	1687
2010-06-30	266
2010-09-30	232
2010-12-31	225
2011-03-31	194
2011-06-30	186
2011-09-30	72
2011-12-31	63
2012-03-31	5
2012-06-30	2
2012-09-30	111
2012-12-31	202
2013-03-31	422
2013-06-30	434
2013-09-30	19
2013-12-31	597
2014-03-31	555
2014-06-30	498
2014-09-30	378
2014-12-31	211
2015-03-31	192
2015-06-30	193
2015-09-30	197
2015-12-31	197
2016-03-31	161
2016-06-30	152
2016-09-30	1
2016-12-31	4
2017-03-31	4
2017-06-30	9
2017-09-30	1
2017-12-31	3
2018-03-31	1
2018-06-30	1
2018-09-30	1
2018-12-31	1
2019-03-31	7
2019-06-30	3
2019-09-30	543
2019-12-31	550
2020-03-31	509
2020-06-30	570
2020-09-30	93
2020-12-31	5
2021-03-31	4
2021-06-30	4
2021-09-30	4
2021-12-31	4
2022-03-31	4
2022-06-30	5
2022-09-30	4
2022-12-31	5
2023-03-31	11
2023-06-30	5
2023-09-30	5