Quarter	US dollars
2004-12-31	-563
2005-03-31	-964
2005-06-30	-204
2005-09-30	-145
2005-12-31	-192
2006-03-31	-288
2006-06-30	-301
2006-09-30	-458
2006-12-31	-558
2007-03-31	-1593
2007-06-30	-327
2007-09-30	-224
2007-12-31	-307
2008-03-31	-12
2008-06-30	-422
2008-09-30	-627
2008-12-31	-562
2009-03-31	-635
2009-06-30	-786
2009-09-30	-830
2009-12-31	-620
2010-03-31	-1021
2010-06-30	-1209
2010-09-30	-1257
2010-12-31	-1194
2011-03-31	-1371
2011-06-30	-1551
2011-09-30	-946
2011-12-31	-758
2012-03-31	-588
2012-06-30	-1509
2012-09-30	-1796
2012-12-31	-2082
2013-03-31	-1734
2013-06-30	-1453
2013-09-30	-1056
2013-12-31	-1253
2014-03-31	-1164
2014-06-30	-1142
2014-09-30	-721
2014-12-31	-732
2015-03-31	-950
2015-06-30	-884
2015-09-30	-906
2015-12-31	-2005
2016-03-31	-2010
2016-06-30	-1970
2016-09-30	-1945
2016-12-31	-1876
2017-03-31	-2010
2017-06-30	-1442
2017-09-30	-1994
2017-12-31	-1327
2018-03-31	-1360
2018-06-30	-1337
2018-09-30	-1524
2018-12-31	-1084
2019-03-31	-1199
2019-06-30	-373
2019-09-30	-839
2019-12-31	-1765
2020-03-31	-1852
2020-06-30	-2320
2020-09-30	-2064
2020-12-31	-1750
2021-03-31	-1473
2021-06-30	-1584
2021-09-30	-1656
2021-12-31	-1779
2022-03-31	-1732
2022-06-30	-1363
2022-09-30	-1749
2022-12-31	-2071
2023-03-31	-1791
2023-06-30	-1586
2023-09-30	-1458