Quarter	US dollars
2004-12-31	2
2005-03-31	4
2005-06-30	2
2005-09-30	0
2005-12-31	21
2006-03-31	2
2006-06-30	2
2006-09-30	4
2006-12-31	2
2007-03-31	6
2007-06-30	6
2007-09-30	2
2007-12-31	2
2008-03-31	4
2008-06-30	2
2008-09-30	267
2008-12-31	282
2009-03-31	246
2009-06-30	298
2009-09-30	337
2009-12-31	284
2010-03-31	273
2010-06-30	180
2010-09-30	151
2010-12-31	144
2011-03-31	107
2011-06-30	181
2011-09-30	134
2011-12-31	414
2012-03-31	211
2012-06-30	152
2012-09-30	8
2012-12-31	105
2013-03-31	106
2013-06-30	103
2013-09-30	96
2013-12-31	5
2014-03-31	5
2014-06-30	3
2014-09-30	3
2014-12-31	5
2015-03-31	4
2015-06-30	2
2015-09-30	2
2015-12-31	1
2016-03-31	1
2016-06-30	1
2016-09-30	3
2016-12-31	1
2017-03-31	21
2017-06-30	317
2017-09-30	44
2017-12-31	38
2018-03-31	18
2018-06-30	21
2018-09-30	126
2018-12-31	103
2019-03-31	152
2019-06-30	144
2019-09-30	139
2019-12-31	248
2020-03-31	288
2020-06-30	326
2020-09-30	344
2020-12-31	345
2021-03-31	346
2021-06-30	355
2021-09-30	361
2021-12-31	360
2022-03-31	342
2022-06-30	325
2022-09-30	307
2022-12-31	322
2023-03-31	207
2023-06-30	218
2023-09-30	197