Quarter	US dollars
2004-12-31	1058
2005-03-31	1138
2005-06-30	1188
2005-09-30	1192
2005-12-31	1006
2006-03-31	859
2006-06-30	1050
2006-09-30	1177
2006-12-31	1029
2007-03-31	1381
2007-06-30	5951
2007-09-30	4128
2007-12-31	4931
2008-03-31	6430
2008-06-30	6935
2008-09-30	6095
2008-12-31	11120
2009-03-31	8732
2009-06-30	4987
2009-09-30	4598
2009-12-31	4370
2010-03-31	3931
2010-06-30	4201
2010-09-30	4643
2010-12-31	3626
2011-03-31	3336
2011-06-30	3656
2011-09-30	4058
2011-12-31	3831
2012-03-31	3455
2012-06-30	3835
2012-09-30	3667
2012-12-31	3082
2013-03-31	2648
2013-06-30	2152
2013-09-30	1853
2013-12-31	1993
2014-03-31	7093
2014-06-30	7555
2014-09-30	7323
2014-12-31	5954
2015-03-31	6500
2015-06-30	4034
2015-09-30	5197
2015-12-31	3683
2016-03-31	4131
2016-06-30	4432
2016-09-30	4395
2016-12-31	3167
2017-03-31	2660
2017-06-30	2246
2017-09-30	2047
2017-12-31	281
2018-03-31	860
2018-06-30	444
2018-09-30	599
2018-12-31	1526
2019-03-31	5288
2019-06-30	1921
2019-09-30	2189
2019-12-31	1443
2020-03-31	1926
2020-06-30	1754
2020-09-30	1502
2020-12-31	1970
2021-03-31	-40
2021-06-30	717
2021-09-30	851
2021-12-31	447
2022-03-31	-207
2022-06-30	805
2022-09-30	694
2022-12-31	2055
2023-03-31	1262
2023-06-30	508
2023-09-30	1103