Quarter	US dollars
2004-12-31	0
2005-03-31	23
2005-06-30	0
2005-09-30	2
2005-12-31	64
2006-03-31	-149
2006-06-30	-172
2006-09-30	-161
2006-12-31	-200
2007-03-31	24
2007-06-30	36
2007-09-30	-51
2007-12-31	-108
2008-03-31	358
2008-06-30	426
2008-09-30	469
2008-12-31	470
2009-03-31	440
2009-06-30	451
2009-09-30	449
2009-12-31	289
2010-03-31	174
2010-06-30	-2060
2010-09-30	-2039
2010-12-31	-1988
2011-03-31	-1690
2011-06-30	-1924
2011-09-30	-1511
2011-12-31	-1381
2012-03-31	-1282
2012-06-30	-1189
2012-09-30	-1140
2012-12-31	-5
2013-03-31	-2
2013-06-30	-2
2013-09-30	23
2013-12-31	20
2014-03-31	23
2014-06-30	26
2014-09-30	13
2014-12-31	17
2015-03-31	25
2015-06-30	25
2015-09-30	48
2015-12-31	46
2016-03-31	52
2016-06-30	38
2016-09-30	44
2016-12-31	42
2017-03-31	40
2017-06-30	147
2017-09-30	170
2017-12-31	111
2018-03-31	76
2018-06-30	69
2018-09-30	52
2018-12-31	13
2019-03-31	22
2019-06-30	-14
2019-09-30	15
2019-12-31	-54
2020-03-31	-66
2020-06-30	-46
2020-09-30	-32
2020-12-31	-40
2021-03-31	-217
2021-06-30	-169
2021-09-30	-151
2021-12-31	-156
2022-03-31	-161
2022-06-30	-126
2022-09-30	-122
2022-12-31	-124
2023-03-31	-82
2023-06-30	-29
2023-09-30	-91