Quarter	US dollars
2004-12-31	-2667
2005-03-31	-2645
2005-06-30	-3289
2005-09-30	-3474
2005-12-31	-3526
2006-03-31	-3297
2006-06-30	-3188
2006-09-30	-2974
2006-12-31	-3536
2007-03-31	-2944
2007-06-30	-3036
2007-09-30	-3592
2007-12-31	-2947
2008-03-31	-2192
2008-06-30	-3009
2008-09-30	-2992
2008-12-31	-2178
2009-03-31	-1200
2009-06-30	-1395
2009-09-30	-1473
2009-12-31	-1358
2010-03-31	-1204
2010-06-30	-711
2010-09-30	-320
2010-12-31	-313
2011-03-31	8
2011-06-30	-88
2011-09-30	-363
2011-12-31	-1113
2012-03-31	-2666
2012-06-30	-2116
2012-09-30	-1692
2012-12-31	-47
2013-03-31	-882
2013-06-30	-605
2013-09-30	259
2013-12-31	-540
2014-03-31	-859
2014-06-30	-1101
2014-09-30	-1136
2014-12-31	-1553
2015-03-31	-1388
2015-06-30	-2029
2015-09-30	-2336
2015-12-31	-1030
2016-03-31	-345
2016-06-30	-50
2016-09-30	-774
2016-12-31	-2409
2017-03-31	-1865
2017-06-30	-2081
2017-09-30	-1917
2017-12-31	-1489
2018-03-31	-1109
2018-06-30	-1928
2018-09-30	-1539
2018-12-31	-2034
2019-03-31	-1904
2019-06-30	-2973
2019-09-30	-2262
2019-12-31	-1736
2020-03-31	-3274
2020-06-30	-1441
2020-09-30	-1737
2020-12-31	-2551
2021-03-31	-2722
2021-06-30	-2967
2021-09-30	-2228
2021-12-31	-2427
2022-03-31	-2835
2022-06-30	-2112
2022-09-30	-1686
2022-12-31	-1968
2023-03-31	-1955
2023-06-30	-1992
2023-09-30	-2342