Quarter	US dollars
2004-12-31	19
2005-03-31	17
2005-06-30	14
2005-09-30	14
2005-12-31	55
2006-03-31	52
2006-06-30	43
2006-09-30	58
2006-12-31	252
2007-03-31	788
2007-06-30	949
2007-09-30	870
2007-12-31	850
2008-03-31	1592
2008-06-30	1053
2008-09-30	1091
2008-12-31	436
2009-03-31	128
2009-06-30	92
2009-09-30	125
2009-12-31	95
2010-03-31	65
2010-06-30	154
2010-09-30	147
2010-12-31	67
2011-03-31	50
2011-06-30	72
2011-09-30	59
2011-12-31	54
2012-03-31	83
2012-06-30	77
2012-09-30	81
2012-12-31	87
2013-03-31	128
2013-06-30	141
2013-09-30	92
2013-12-31	89
2014-03-31	87
2014-06-30	174
2014-09-30	323
2014-12-31	259
2015-03-31	276
2015-06-30	204
2015-09-30	185
2015-12-31	175
2016-03-31	207
2016-06-30	247
2016-09-30	287
2016-12-31	344
2017-03-31	314
2017-06-30	186
2017-09-30	220
2017-12-31	323
2018-03-31	361
2018-06-30	654
2018-09-30	476
2018-12-31	405
2019-03-31	490
2019-06-30	355
2019-09-30	292
2019-12-31	266
2020-03-31	162
2020-06-30	211
2020-09-30	248
2020-12-31	371
2021-03-31	437
2021-06-30	527
2021-09-30	593
2021-12-31	580
2022-03-31	555
2022-06-30	510
2022-09-30	496
2022-12-31	480
2023-03-31	560
2023-06-30	460
2023-09-30	552