Quarter	US dollars
2004-12-31	-513
2005-03-31	-340
2005-06-30	-635
2005-09-30	-729
2005-12-31	-760
2006-03-31	-1271
2006-06-30	-834
2006-09-30	-826
2006-12-31	-967
2007-03-31	-433
2007-06-30	-1453
2007-09-30	-1194
2007-12-31	-1264
2008-03-31	-1779
2008-06-30	-1132
2008-09-30	-620
2008-12-31	-1971
2009-03-31	-1907
2009-06-30	-652
2009-09-30	-872
2009-12-31	-1448
2010-03-31	-180
2010-06-30	-260
2010-09-30	555
2010-12-31	816
2011-03-31	-1579
2011-06-30	-1618
2011-09-30	-2181
2011-12-31	-2440
2012-03-31	-2632
2012-06-30	-2739
2012-09-30	-2863
2012-12-31	-3101
2013-03-31	-4216
2013-06-30	-4389
2013-09-30	-5122
2013-12-31	-4117
2014-03-31	-4305
2014-06-30	-4707
2014-09-30	-4154
2014-12-31	-4781
2015-03-31	-4972
2015-06-30	-4698
2015-09-30	-3676
2015-12-31	-3908
2016-03-31	-3685
2016-06-30	-3645
2016-09-30	-4022
2016-12-31	-3934
2017-03-31	-4121
2017-06-30	-2886
2017-09-30	-5755
2017-12-31	-5218
2018-03-31	-5665
2018-06-30	-4340
2018-09-30	-4615
2018-12-31	-5660
2019-03-31	-5286
2019-06-30	-5635
2019-09-30	-6442
2019-12-31	-6268
2020-03-31	-5951
2020-06-30	-6175
2020-09-30	-5389
2020-12-31	-5237
2021-03-31	-5891
2021-06-30	-6151
2021-09-30	-7361
2021-12-31	-7271
2022-03-31	-6143
2022-06-30	-5992
2022-09-30	-5900
2022-12-31	-6194
2023-03-31	-5835
2023-06-30	-5601
2023-09-30	-5848