Quarter	US dollars
2004-12-31	6124
2005-03-31	5509
2005-06-30	6148
2005-09-30	7643
2005-12-31	5536
2006-03-31	3658
2006-06-30	3597
2006-09-30	2109
2006-12-31	2507
2007-03-31	3307
2007-06-30	873
2007-09-30	1897
2007-12-31	1760
2008-03-31	3838
2008-06-30	4052
2008-09-30	2994
2008-12-31	1261
2009-03-31	3676
2009-06-30	4315
2009-09-30	4448
2009-12-31	3302
2010-03-31	2584
2010-06-30	2264
2010-09-30	2623
2010-12-31	2140
2011-03-31	1799
2011-06-30	1859
2011-09-30	1759
2011-12-31	1976
2012-03-31	1632
2012-06-30	1798
2012-09-30	2261
2012-12-31	2005
2013-03-31	1635
2013-06-30	866
2013-09-30	1213
2013-12-31	1124
2014-03-31	1094
2014-06-30	638
2014-09-30	783
2014-12-31	1244
2015-03-31	1312
2015-06-30	889
2015-09-30	1242
2015-12-31	1338
2016-03-31	653
2016-06-30	924
2016-09-30	763
2016-12-31	780
2017-03-31	805
2017-06-30	681
2017-09-30	664
2017-12-31	422
2018-03-31	790
2018-06-30	951
2018-09-30	450
2018-12-31	-15
2019-03-31	714
2019-06-30	1154
2019-09-30	976
2019-12-31	1518
2020-03-31	1617
2020-06-30	1474
2020-09-30	844
2020-12-31	456
2021-03-31	436
2021-06-30	-348
2021-09-30	-69
2021-12-31	47
2022-03-31	180
2022-06-30	319
2022-09-30	417
2022-12-31	374
2023-03-31	-170
2023-06-30	75
2023-09-30	253