Quarter	US dollars
2004-12-31	-19
2005-03-31	60
2005-06-30	54
2005-09-30	-30
2005-12-31	-172
2006-03-31	-189
2006-06-30	-226
2006-09-30	-202
2006-12-31	-250
2007-03-31	-280
2007-06-30	-275
2007-09-30	-379
2007-12-31	-315
2008-03-31	-340
2008-06-30	-342
2008-09-30	-262
2008-12-31	-213
2009-03-31	-427
2009-06-30	-319
2009-09-30	-313
2009-12-31	-336
2010-03-31	-244
2010-06-30	-265
2010-09-30	-238
2010-12-31	-355
2011-03-31	-248
2011-06-30	-281
2011-09-30	-252
2011-12-31	-216
2012-03-31	-280
2012-06-30	-232
2012-09-30	-170
2012-12-31	-223
2013-03-31	-150
2013-06-30	-188
2013-09-30	-228
2013-12-31	-228
2014-03-31	-178
2014-06-30	-277
2014-09-30	-225
2014-12-31	-142
2015-03-31	-157
2015-06-30	-151
2015-09-30	-209
2015-12-31	-234
2016-03-31	-171
2016-06-30	-66
2016-09-30	-82
2016-12-31	-97
2017-03-31	-96
2017-06-30	-130
2017-09-30	-152
2017-12-31	-180
2018-03-31	-182
2018-06-30	-139
2018-09-30	-280
2018-12-31	-208
2019-03-31	-106
2019-06-30	-144
2019-09-30	-276
2019-12-31	-209
2020-03-31	-131
2020-06-30	-56
2020-09-30	-36
2020-12-31	-22
2021-03-31	-130
2021-06-30	-199
2021-09-30	-154
2021-12-31	20
2022-03-31	-13
2022-06-30	-40
2022-09-30	-133
2022-12-31	-140
2023-03-31	-129
2023-06-30	-164
2023-09-30	-202