Quarter	US dollars
2004-12-31	-1298
2005-03-31	-1335
2005-06-30	-1271
2005-09-30	-1433
2005-12-31	-1746
2006-03-31	-1393
2006-06-30	-1352
2006-09-30	-1287
2006-12-31	-1532
2007-03-31	-1516
2007-06-30	-1649
2007-09-30	-1544
2007-12-31	-1380
2008-03-31	-1538
2008-06-30	-1636
2008-09-30	-1399
2008-12-31	-1170
2009-03-31	-1009
2009-06-30	-952
2009-09-30	-867
2009-12-31	-1105
2010-03-31	-966
2010-06-30	-937
2010-09-30	-700
2010-12-31	-795
2011-03-31	-880
2011-06-30	-671
2011-09-30	-558
2011-12-31	-427
2012-03-31	-892
2012-06-30	-703
2012-09-30	-640
2012-12-31	-228
2013-03-31	-398
2013-06-30	8
2013-09-30	-138
2013-12-31	-114
2014-03-31	-85
2014-06-30	-157
2014-09-30	-112
2014-12-31	-356
2015-03-31	-361
2015-06-30	-510
2015-09-30	-560
2015-12-31	-516
2016-03-31	-677
2016-06-30	-634
2016-09-30	-576
2016-12-31	-607
2017-03-31	-474
2017-06-30	-448
2017-09-30	-554
2017-12-31	-769
2018-03-31	-856
2018-06-30	-887
2018-09-30	-936
2018-12-31	-541
2019-03-31	-681
2019-06-30	-309
2019-09-30	-244
2019-12-31	-317
2020-03-31	-324
2020-06-30	-175
2020-09-30	-185
2020-12-31	-120
2021-03-31	-163
2021-06-30	-181
2021-09-30	-173
2021-12-31	-135
2022-03-31	-58
2022-06-30	-32
2022-09-30	-289
2022-12-31	-117
2023-03-31	124
2023-06-30	219
2023-09-30	138