Quarter	US dollars
2004-12-31	743
2005-03-31	1157
2005-06-30	1819
2005-09-30	2439
2005-12-31	2184
2006-03-31	5715
2006-06-30	14477
2006-09-30	12973
2006-12-31	14016
2007-03-31	17130
2007-06-30	27454
2007-09-30	28619
2007-12-31	42259
2008-03-31	34795
2008-06-30	34200
2008-09-30	27268
2008-12-31	37823
2009-03-31	22621
2009-06-30	7873
2009-09-30	7601
2009-12-31	5878
2010-03-31	9288
2010-06-30	15082
2010-09-30	-753
2010-12-31	-304
2011-03-31	-120
2011-06-30	-273
2011-09-30	-51
2011-12-31	122
2012-03-31	201
2012-06-30	348
2012-09-30	304
2012-12-31	202
2013-03-31	-480
2013-06-30	-124
2013-09-30	264
2013-12-31	-81
2014-03-31	1264
2014-06-30	986
2014-09-30	1243
2014-12-31	1867
2015-03-31	-334
2015-06-30	-612
2015-09-30	1387
2015-12-31	93
2016-03-31	183
2016-06-30	-596
2016-09-30	-703
2016-12-31	-182
2017-03-31	-484
2017-06-30	-326
2017-09-30	-852
2017-12-31	4012
2018-03-31	2929
2018-06-30	-931
2018-09-30	-922
2018-12-31	-1217
2019-03-31	-932
2019-06-30	-1279
2019-09-30	1008
2019-12-31	-436
2020-03-31	-3486
2020-06-30	-3525
2020-09-30	-3849
2020-12-31	-3040
2021-03-31	-2482
2021-06-30	-1755
2021-09-30	-1439
2021-12-31	-1166
2022-03-31	-66
2022-06-30	570
2022-09-30	391
2022-12-31	278
2023-03-31	236
2023-06-30	-64
2023-09-30	243