Quarter	US dollars
2004-12-31	572
2005-03-31	533
2005-06-30	586
2005-09-30	731
2005-12-31	961
2006-03-31	1268
2006-06-30	1666
2006-09-30	2176
2006-12-31	1297
2007-03-31	1236
2007-06-30	2480
2007-09-30	3113
2007-12-31	2869
2008-03-31	4353
2008-06-30	3909
2008-09-30	3653
2008-12-31	3318
2009-03-31	3017
2009-06-30	3124
2009-09-30	2677
2009-12-31	6020
2010-03-31	5396
2010-06-30	4167
2010-09-30	4890
2010-12-31	2805
2011-03-31	3086
2011-06-30	2415
2011-09-30	1645
2011-12-31	1305
2012-03-31	1354
2012-06-30	1741
2012-09-30	1978
2012-12-31	2467
2013-03-31	3115
2013-06-30	2199
2013-12-31	2165
2014-03-31	2014
2014-06-30	1865
2014-09-30	1801
2014-12-31	1427
2015-03-31	1431
2015-06-30	1326
2015-09-30	1189
2015-12-31	917
2016-03-31	1081
2016-06-30	897
2016-09-30	864
2016-12-31	716
2017-03-31	615
2017-06-30	625
2017-09-30	682
2017-12-31	807
2018-03-31	940
2018-06-30	879
2018-09-30	1445
2018-12-31	1470
2019-03-31	1025
2019-06-30	1129
2019-09-30	793
2019-12-31	950
2020-03-31	977
2020-06-30	944
2020-09-30	1022
2020-12-31	942
2021-03-31	1033
2021-06-30	1106
2021-09-30	1006
2021-12-31	1004
2022-03-31	1124
2022-06-30	852
2022-09-30	777
2022-12-31	719
2023-03-31	613
2023-06-30	693
2023-09-30	659