Quarter	US dollars
2004-12-31	1117
2005-03-31	1282
2005-06-30	1439
2005-09-30	48279
2005-12-31	52013
2006-03-31	56397
2006-06-30	52909
2006-09-30	51349
2006-12-31	59428
2007-03-31	61255
2007-06-30	64442
2007-09-30	72747
2007-12-31	76916
2008-03-31	67158
2008-06-30	74517
2008-09-30	70486
2008-12-31	63306
2009-03-31	64710
2009-06-30	77964
2009-09-30	78935
2009-12-31	80151
2010-03-31	82701
2010-06-30	79321
2010-09-30	84721
2010-12-31	92394
2011-03-31	89560
2011-06-30	89377
2011-09-30	76208
2011-12-31	75828
2012-03-31	84260
2012-06-30	79418
2012-09-30	78258
2012-12-31	78159
2013-03-31	72485
2013-06-30	66620
2013-09-30	66918
2013-12-31	65388
2014-03-31	66208
2014-06-30	67143
2014-09-30	65219
2014-12-31	64356
2015-03-31	64846
2015-06-30	68221
2015-09-30	65252
2015-12-31	64611
2016-03-31	59259
2016-06-30	58181
2016-09-30	62142
2016-12-31	62150
2017-03-31	65335
2017-06-30	6612
2017-09-30	7365
2017-12-31	7580
2018-03-31	7982
2018-06-30	5133
2018-09-30	5928
2018-12-31	6240
2019-03-31	6249
2019-06-30	5847
2019-09-30	5772
2019-12-31	6067
2020-03-31	4702
2020-06-30	4244
2020-09-30	4379
2020-12-31	4935
2021-03-31	5011
2021-06-30	5696
2021-09-30	5996
2021-12-31	5935
2022-03-31	6906
2022-06-30	5870
2022-09-30	5711
2022-12-31	6166
2023-03-31	5424
2023-06-30	5134
2023-09-30	4840