Quarter	US dollars
2004-12-31	11410
2005-03-31	13405
2005-06-30	16857
2005-09-30	19282
2005-12-31	18280
2006-03-31	19910
2006-06-30	20906
2006-09-30	22273
2006-12-31	26014
2007-03-31	28160
2007-06-30	31256
2007-09-30	32152
2007-12-31	36426
2008-03-31	40144
2008-06-30	48031
2008-09-30	44143
2008-12-31	36045
2009-03-31	35719
2009-06-30	42132
2009-09-30	49335
2009-12-31	49868
2010-03-31	53377
2010-06-30	52831
2010-09-30	63289
2010-12-31	65529
2011-03-31	68076
2011-06-30	78631
2011-09-30	66653
2011-12-31	66354
2012-03-31	66655
2012-06-30	58103
2012-09-30	58928
2012-12-31	54832
2013-03-31	57960
2013-06-30	49482
2013-09-30	52940
2013-12-31	48546
2014-03-31	52130
2014-06-30	53671
2014-09-30	50570
2014-12-31	48881
2015-03-31	43716
2015-06-30	42615
2015-09-30	33870
2015-12-31	32667
2016-03-31	35847
2016-06-30	37095
2016-09-30	1080
2016-12-31	888
2017-03-31	1073
2017-06-30	1046
2017-09-30	1054
2017-12-31	989
2018-03-31	1138
2018-06-30	1120
2018-09-30	1075
2018-12-31	1041
2019-03-31	1092
2019-06-30	624
2019-09-30	564
2019-12-31	1058
2020-03-31	826
2020-06-30	1161
2020-09-30	1115
2020-12-31	1574
2021-03-31	1457
2021-06-30	1353
2021-09-30	1242
2021-12-31	1553
2022-03-31	2016
2022-06-30	1524
2022-09-30	1629
2022-12-31	1423
2023-03-31	1289
2023-06-30	1524
2023-09-30	1554