Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	2
2010-03-31	2
2010-06-30	6
2010-09-30	2
2010-12-31	3
2011-03-31	8
2011-06-30	2
2011-09-30	2
2011-12-31	0
2012-03-31	0
2012-06-30	5
2012-09-30	0
2012-12-31	2
2013-03-31	0
2013-06-30	-3
2013-09-30	0
2013-12-31	-2
2014-03-31	170
2014-06-30	174
2014-09-30	180
2014-12-31	8
2015-03-31	6
2015-06-30	17
2015-09-30	9
2015-12-31	43
2016-03-31	47
2016-06-30	42
2016-09-30	70
2016-12-31	69
2017-03-31	228
2017-06-30	153
2017-09-30	180
2017-12-31	131
2018-03-31	173
2018-06-30	149
2018-09-30	163
2018-12-31	350
2019-03-31	274
2019-06-30	333
2019-09-30	286
2019-12-31	248
2020-03-31	282
2020-06-30	164
2020-09-30	121
2020-12-31	168
2021-03-31	195
2021-06-30	424
2021-09-30	348
2021-12-31	377
2022-03-31	347
2022-06-30	322
2022-09-30	326
2022-12-31	557
2023-03-31	628
2023-06-30	617
2023-09-30	769