Quarter	US dollars
2004-12-31	21
2005-03-31	13
2005-06-30	18
2005-09-30	11
2005-12-31	38
2006-03-31	54
2006-06-30	20
2006-09-30	7
2006-12-31	10
2007-03-31	8
2007-06-30	8
2007-09-30	8
2007-12-31	18
2008-03-31	28
2008-06-30	40
2008-09-30	36
2008-12-31	13
2009-03-31	1
2009-06-30	12
2009-09-30	123
2009-12-31	119
2010-03-31	309
2010-06-30	157
2010-09-30	120
2010-12-31	106
2011-03-31	103
2011-06-30	111
2011-09-30	122
2011-12-31	209
2012-03-31	206
2012-06-30	155
2012-09-30	139
2012-12-31	178
2013-03-31	281
2013-06-30	255
2013-09-30	134
2013-12-31	238
2014-03-31	260
2014-06-30	222
2014-09-30	441
2014-12-31	620
2015-03-31	536
2015-06-30	691
2015-09-30	489
2015-12-31	267
2016-03-31	276
2016-06-30	301
2016-09-30	457
2016-12-31	502
2017-03-31	328
2017-06-30	622
2017-09-30	738
2017-12-31	886
2018-03-31	571
2018-06-30	374
2018-09-30	694
2018-12-31	647
2019-03-31	401
2019-06-30	565
2019-09-30	511
2019-12-31	427
2020-03-31	358
2020-06-30	355
2020-09-30	410
2020-12-31	629
2021-03-31	1250
2021-06-30	1139
2021-09-30	569
2021-12-31	673
2022-03-31	1154
2022-06-30	857
2022-09-30	553
2022-12-31	551
2023-03-31	627
2023-06-30	496
2023-09-30	394