Quarter	US dollars
2004-12-31	-6
2005-03-31	159
2005-06-30	84
2005-09-30	460
2005-12-31	252
2006-03-31	347
2006-06-30	525
2006-09-30	1246
2006-12-31	1061
2007-03-31	1457
2007-06-30	971
2007-09-30	1112
2007-12-31	1053
2008-03-31	1111
2008-06-30	1029
2008-09-30	1397
2008-12-31	924
2009-03-31	1231
2009-06-30	978
2009-09-30	872
2009-12-31	1214
2010-03-31	1568
2010-06-30	1694
2010-09-30	1678
2010-12-31	1290
2011-03-31	1161
2011-06-30	1020
2011-09-30	995
2011-12-31	264
2012-03-31	1707
2012-06-30	1569
2012-09-30	1907
2012-12-31	2066
2013-03-31	2541
2013-06-30	2196
2013-09-30	2604
2013-12-31	3325
2014-03-31	2876
2014-06-30	2948
2014-09-30	3079
2014-12-31	2305
2015-03-31	2398
2015-06-30	2762
2015-09-30	2433
2015-12-31	3285
2016-03-31	2822
2016-06-30	2342
2016-09-30	1486
2016-12-31	1640
2017-03-31	1179
2017-06-30	207
2017-09-30	684
2017-12-31	211
2018-03-31	226
2018-06-30	-48
2018-09-30	-64
2018-12-31	711
2019-03-31	830
2019-06-30	407
2019-09-30	1045
2019-12-31	1069
2020-03-31	847
2020-06-30	599
2020-09-30	2147
2020-12-31	2015
2021-03-31	1141
2021-06-30	1081
2021-09-30	843
2021-12-31	837
2022-03-31	3
2022-06-30	158
2022-09-30	-211
2022-12-31	27
2023-03-31	-80
2023-06-30	958
2023-09-30	342