Quarter	US dollars
2004-12-31	2481
2005-03-31	2412
2005-06-30	3302
2005-09-30	4003
2005-12-31	752
2006-03-31	265
2006-06-30	851
2006-09-30	1127
2006-12-31	-910
2007-03-31	2642
2007-06-30	5498
2007-09-30	4953
2007-12-31	10713
2008-03-31	10401
2008-06-30	5467
2008-09-30	2607
2008-12-31	3716
2009-03-31	3779
2009-06-30	3686
2009-09-30	2034
2009-12-31	-5356
2010-03-31	-6338
2010-06-30	-12362
2010-09-30	-13719
2010-12-31	-13069
2011-03-31	-12091
2011-06-30	-14524
2011-09-30	-11384
2011-12-31	-5291
2012-03-31	-7068
2012-06-30	-6320
2012-09-30	-10096
2012-12-31	-2925
2013-03-31	-2329
2013-06-30	-2143
2013-09-30	-2785
2013-12-31	-4715
2014-03-31	-1209
2014-06-30	-1120
2014-09-30	-708
2014-12-31	-1182
2015-03-31	-589
2015-06-30	-815
2015-09-30	1080
2015-12-31	-1909
2016-03-31	-1063
2016-06-30	-2154
2016-09-30	-1472
2016-12-31	-1013
2017-03-31	-914
2017-06-30	1850
2017-09-30	2373
2017-12-31	1019
2018-03-31	1180
2018-06-30	1463
2018-09-30	1841
2018-12-31	873
2019-03-31	1987
2019-06-30	2401
2019-09-30	2298
2019-12-31	2272
2020-03-31	2969
2020-06-30	2969
2020-09-30	1494
2020-12-31	943
2021-03-31	1239
2021-06-30	2127
2021-09-30	1966
2021-12-31	1695
2022-03-31	2288
2022-06-30	2212
2022-09-30	1484
2022-12-31	1331
2023-03-31	1647
2023-06-30	1330
2023-09-30	1522