Quarter	US dollars
2004-12-31	-824
2005-03-31	-987
2005-06-30	-975
2005-09-30	-1121
2005-12-31	-1124
2006-03-31	-1147
2006-06-30	-1308
2006-09-30	-1093
2006-12-31	-887
2007-03-31	-904
2007-06-30	-1112
2007-09-30	-1017
2007-12-31	-1489
2008-03-31	-1984
2008-06-30	-1043
2008-09-30	-845
2008-12-31	-857
2009-03-31	-598
2009-06-30	-715
2009-09-30	-1038
2009-12-31	-1857
2010-03-31	-1614
2010-06-30	-1200
2010-09-30	-1155
2010-12-31	-1039
2011-03-31	-819
2011-06-30	-515
2011-09-30	-226
2011-12-31	-292
2012-03-31	-513
2012-06-30	-460
2012-09-30	-473
2012-12-31	-322
2013-03-31	82
2013-06-30	49
2013-09-30	-152
2013-12-31	322
2014-03-31	740
2014-06-30	749
2014-09-30	909
2014-12-31	1342
2015-03-31	1001
2015-06-30	887
2015-09-30	1221
2015-12-31	1209
2016-03-31	1024
2016-06-30	1879
2016-09-30	729
2016-12-31	778
2017-03-31	577
2017-06-30	613
2017-09-30	606
2017-12-31	550
2018-03-31	626
2018-06-30	644
2018-09-30	595
2018-12-31	734
2019-03-31	767
2019-06-30	705
2019-09-30	742
2019-12-31	816
2020-03-31	882
2020-06-30	746
2020-09-30	760
2020-12-31	606
2021-03-31	691
2021-06-30	645
2021-09-30	659
2021-12-31	531
2022-03-31	592
2022-06-30	551
2022-09-30	460
2022-12-31	490
2023-03-31	466
2023-06-30	465
2023-09-30	289