Quarter	US dollars
2004-12-31	40
2005-03-31	26
2005-06-30	25
2005-09-30	25
2005-12-31	39
2006-03-31	180
2006-06-30	202
2006-09-30	405
2006-12-31	160
2007-03-31	396
2007-06-30	664
2007-09-30	517
2007-12-31	153
2008-03-31	270
2008-06-30	263
2008-09-30	94
2008-12-31	56
2009-03-31	40
2009-06-30	13
2009-09-30	14
2009-12-31	16
2010-03-31	12
2010-06-30	15
2010-09-30	60
2010-12-31	174
2011-03-31	176
2011-06-30	72
2011-09-30	224
2011-12-31	187
2012-03-31	572
2012-06-30	433
2012-09-30	606
2012-12-31	1033
2013-03-31	1233
2013-06-30	1339
2013-09-30	1524
2013-12-31	1633
2014-03-31	1889
2014-06-30	2168
2014-09-30	2192
2014-12-31	2513
2015-03-31	2329
2015-06-30	2529
2015-09-30	2660
2015-12-31	3933
2016-03-31	4079
2016-06-30	4060
2016-09-30	4090
2016-12-31	3910
2017-03-31	3950
2017-06-30	4
2017-09-30	4
2017-12-31	4
2018-03-31	7
2018-06-30	9
2018-09-30	8
2018-12-31	10
2019-03-31	12
2019-06-30	6
2019-09-30	10
2019-12-31	4
2020-03-31	4
2020-06-30	4
2020-09-30	5
2020-12-31	-7
2021-03-31	4
2021-06-30	6
2021-09-30	4
2021-12-31	5
2022-03-31	4
2022-06-30	2
2022-09-30	1
2022-12-31	7
2023-03-31	9
2023-06-30	7
2023-09-30	1