Quarter	US dollars
2004-12-31	2
2005-03-31	-2
2005-06-30	13
2005-09-30	4
2005-12-31	3
2006-03-31	3
2006-06-30	2
2006-09-30	2
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	38
2008-06-30	0
2008-09-30	4
2008-12-31	1
2009-03-31	3
2009-06-30	2
2009-09-30	5
2009-12-31	10
2010-03-31	15
2010-06-30	6
2010-09-30	5
2010-12-31	5
2011-03-31	5
2011-06-30	-3
2011-09-30	-2
2011-12-31	-28
2012-03-31	-3
2012-06-30	-2
2012-09-30	-386
2012-12-31	-383
2013-03-31	-2
2013-06-30	-2
2013-09-30	-2
2013-12-31	-20
2014-03-31	7
2014-06-30	3
2014-09-30	0
2014-12-31	-108
2015-03-31	-134
2015-06-30	-134
2015-09-30	-198
2015-12-31	-200
2016-03-31	-198
2016-06-30	-199
2016-09-30	-196
2016-12-31	-86
2017-03-31	-63
2017-06-30	-577
2017-09-30	-402
2017-12-31	-412
2018-03-31	-226
2018-06-30	-230
2018-09-30	-219
2018-12-31	-146
2019-03-31	-202
2019-06-30	-211
2019-09-30	-229
2019-12-31	-276
2020-03-31	-366
2020-06-30	-398
2020-09-30	-419
2020-12-31	-401
2021-03-31	-385
2021-06-30	-391
2021-09-30	-394
2021-12-31	-388
2022-03-31	-359
2022-06-30	-324
2022-09-30	-288
2022-12-31	-279
2023-03-31	-261
2023-06-30	-232
2023-09-30	-213