Quarter	US dollars
2004-12-31	-36
2005-03-31	-338
2005-06-30	39
2005-09-30	-51
2005-12-31	77
2006-03-31	-16
2006-06-30	-226
2006-09-30	-306
2006-12-31	-266
2007-03-31	-1000
2007-06-30	-1342
2007-09-30	-1483
2007-12-31	-1145
2008-03-31	-1522
2008-06-30	-3280
2008-09-30	-3858
2008-12-31	-2409
2009-03-31	-2663
2009-06-30	-3814
2009-09-30	-3266
2009-12-31	-3150
2010-03-31	-3127
2010-06-30	-3881
2010-09-30	-3633
2010-12-31	-5927
2011-03-31	-4605
2011-06-30	-12264
2011-09-30	-7546
2011-12-31	-7928
2012-03-31	-5573
2012-06-30	-6941
2012-09-30	-5447
2012-12-31	-5381
2013-03-31	-4926
2013-06-30	-4656
2013-09-30	-4402
2013-12-31	-5148
2014-03-31	-1262
2014-06-30	-3939
2014-09-30	-3915
2014-12-31	-5188
2015-03-31	-3706
2015-06-30	-4064
2015-09-30	-5262
2015-12-31	-3537
2016-03-31	-4407
2016-06-30	-4695
2016-09-30	-3832
2016-12-31	-646
2017-03-31	-2056
2017-06-30	-1806
2017-09-30	-1486
2017-12-31	-1836
2018-03-31	-1429
2018-06-30	-2605
2018-09-30	-1985
2018-12-31	-2494
2019-03-31	-1736
2019-06-30	-3270
2019-09-30	-4152
2019-12-31	-2598
2020-03-31	-6988
2020-06-30	-4805
2020-09-30	-4238
2020-12-31	-3229
2021-03-31	-3293
2021-06-30	-2761
2021-09-30	-3308
2021-12-31	-2651
2022-03-31	-3184
2022-06-30	-5041
2022-09-30	-8943
2022-12-31	-3374
2023-03-31	-1542
2023-06-30	-1904
2023-09-30	-1922