Quarter	US dollars
2004-12-31	19
2005-03-31	17
2005-06-30	-4
2005-09-30	42
2005-12-31	24
2006-03-31	45
2006-06-30	44
2006-09-30	60
2006-12-31	29
2007-03-31	10
2007-06-30	-90
2007-09-30	-55
2007-12-31	-58
2008-03-31	46
2008-06-30	-2
2008-09-30	-30
2008-12-31	-30
2009-03-31	-57
2009-06-30	-54
2009-09-30	128
2009-12-31	126
2010-03-31	120
2010-06-30	135
2010-09-30	239
2010-12-31	49
2011-03-31	56
2011-06-30	604
2011-09-30	581
2011-12-31	642
2012-03-31	606
2012-06-30	659
2012-09-30	657
2012-12-31	642
2013-03-31	559
2013-06-30	535
2013-09-30	523
2013-12-31	96
2014-03-31	127
2014-06-30	142
2014-09-30	65
2014-12-31	95
2015-03-31	159
2015-06-30	113
2015-09-30	153
2015-12-31	197
2016-03-31	162
2016-06-30	191
2016-09-30	249
2016-12-31	299
2017-03-31	-28
2017-06-30	44
2017-09-30	496
2017-12-31	499
2018-03-31	500
2018-06-30	647
2018-09-30	621
2018-12-31	569
2019-03-31	569
2019-06-30	616
2019-09-30	610
2019-12-31	602
2020-03-31	587
2020-06-30	562
2020-09-30	560
2020-12-31	51
2021-03-31	41
2021-06-30	40
2021-09-30	43
2021-12-31	50
2022-03-31	11
2022-06-30	11
2022-09-30	9
2022-12-31	9
2023-03-31	10
2023-06-30	6
2023-09-30	7