Quarter	US dollars
2004-12-31	-380
2005-03-31	-361
2005-06-30	-332
2005-09-30	-140
2005-12-31	-160
2006-03-31	-163
2006-06-30	-346
2006-09-30	-312
2006-12-31	-147
2007-03-31	-159
2007-06-30	-159
2007-09-30	-147
2007-12-31	-56
2008-03-31	-60
2008-06-30	-44
2008-09-30	-32
2008-12-31	-35
2009-03-31	-44
2009-06-30	-49
2009-09-30	-43
2009-12-31	-45
2010-03-31	17
2010-06-30	-187
2010-09-30	-205
2010-12-31	-194
2011-03-31	-984
2011-06-30	-759
2011-09-30	-897
2011-12-31	-881
2012-03-31	-414
2012-06-30	-504
2012-09-30	-591
2012-12-31	-635
2013-03-31	-707
2013-06-30	-1420
2013-09-30	-1145
2013-12-31	-926
2014-03-31	-1214
2014-06-30	-1327
2014-09-30	-725
2014-12-31	-902
2015-03-31	-705
2015-06-30	-444
2015-09-30	-417
2015-12-31	-489
2016-03-31	-347
2016-06-30	-242
2016-09-30	-86
2016-12-31	-46
2017-03-31	-38
2017-06-30	-38
2017-09-30	-302
2017-12-31	-185
2018-03-31	-230
2018-06-30	-218
2018-09-30	-220
2018-12-31	-115
2019-03-31	-220
2019-06-30	-311
2019-09-30	-261
2019-12-31	-255
2020-03-31	-180
2020-06-30	-429
2020-09-30	-358
2020-12-31	-233
2021-03-31	-97
2021-06-30	50
2021-09-30	4
2021-12-31	40
2022-03-31	-4
2022-06-30	-39
2022-09-30	-51
2022-12-31	-129
2023-03-31	-311
2023-06-30	-508
2023-09-30	-394