Quarter	US dollars
2004-12-31	17
2005-03-31	13
2005-06-30	13
2005-09-30	11
2005-12-31	7
2006-03-31	24
2006-06-30	20
2006-09-30	2
2006-12-31	14
2007-03-31	12
2007-06-30	32
2007-09-30	14
2007-12-31	8
2008-03-31	8
2008-06-30	-4
2008-09-30	30
2008-12-31	7
2009-03-31	54
2009-06-30	216
2009-09-30	208
2009-12-31	199
2010-03-31	231
2010-06-30	271
2010-09-30	225
2010-12-31	312
2011-03-31	332
2011-06-30	363
2011-09-30	358
2011-12-31	303
2012-03-31	288
2012-06-30	273
2012-09-30	257
2012-12-31	289
2013-03-31	310
2013-06-30	353
2013-09-30	406
2013-12-31	453
2014-03-31	387
2014-06-30	419
2014-09-30	410
2014-12-31	387
2015-03-31	365
2015-06-30	83
2015-09-30	45
2015-12-31	-1
2016-03-31	-1
2016-06-30	3
2016-09-30	-6
2016-12-31	-7
2017-03-31	9
2017-06-30	3002
2017-09-30	3165
2017-12-31	2824
2018-03-31	2894
2018-06-30	2666
2018-09-30	2557
2018-12-31	2461
2019-03-31	2267
2019-06-30	2014
2019-09-30	1951
2019-12-31	2411
2020-03-31	2251
2020-06-30	2611
2020-09-30	2370
2020-12-31	2090
2021-03-31	2774
2021-06-30	2927
2021-09-30	2794
2021-12-31	3096
2022-03-31	2603
2022-06-30	2403
2022-09-30	2407
2022-12-31	1950
2023-03-31	1518
2023-06-30	1410
2023-09-30	1472