Quarter	US dollars
2004-12-31	-111
2005-03-31	-96
2005-06-30	-203
2005-09-30	-182
2005-12-31	-203
2006-03-31	-250
2006-06-30	-387
2006-09-30	-465
2006-12-31	-478
2007-03-31	-551
2007-06-30	-682
2007-09-30	-556
2007-12-31	-647
2008-03-31	-727
2008-06-30	-742
2008-09-30	-834
2008-12-31	-686
2009-03-31	-613
2009-06-30	-619
2009-09-30	-424
2009-12-31	-346
2010-03-31	-244
2010-06-30	-319
2010-09-30	-284
2010-12-31	-272
2011-03-31	-332
2011-06-30	-340
2011-09-30	-209
2011-12-31	-176
2012-03-31	-177
2012-06-30	-160
2012-09-30	-200
2012-12-31	-204
2013-03-31	-200
2013-06-30	-180
2013-09-30	-181
2013-12-31	-218
2014-03-31	-187
2014-06-30	-169
2014-09-30	-293
2014-12-31	-289
2015-03-31	-294
2015-06-30	-285
2015-09-30	-277
2015-12-31	-273
2016-03-31	-572
2016-06-30	-474
2016-09-30	-394
2016-12-31	-445
2017-03-31	-460
2017-06-30	-71
2017-09-30	-60
2017-12-31	-46
2018-03-31	-22
2018-06-30	-34
2018-09-30	-34
2018-12-31	-22
2019-03-31	-21
2019-06-30	-28
2019-09-30	-47
2019-12-31	-48
2020-03-31	-51
2020-06-30	-54
2020-09-30	-56
2020-12-31	-48
2021-03-31	-17
2021-06-30	-19
2021-09-30	-13
2021-12-31	-133
2022-03-31	-16
2022-06-30	-15
2022-09-30	-18
2022-12-31	-18
2023-03-31	-17
2023-06-30	-17
2023-09-30	-21