Quarter	US dollars
2004-12-31	3617
2005-03-31	4435
2005-06-30	4573
2005-09-30	5221
2005-12-31	5471
2006-03-31	5793
2006-06-30	4919
2006-09-30	4784
2006-12-31	5268
2007-03-31	5733
2007-06-30	6507
2007-09-30	7976
2007-12-31	7480
2008-03-31	8059
2008-06-30	8746
2008-09-30	8019
2008-12-31	7809
2009-03-31	6995
2009-06-30	6134
2009-09-30	5959
2009-12-31	6023
2010-03-31	6710
2010-06-30	2560
2010-09-30	1575
2010-12-31	1262
2011-03-31	1191
2011-06-30	1493
2011-09-30	1482
2011-12-31	1622
2012-03-31	511
2012-06-30	593
2012-09-30	472
2012-12-31	661
2013-03-31	427
2013-06-30	496
2013-09-30	615
2013-12-31	1050
2014-03-31	1132
2014-06-30	1176
2014-09-30	1232
2014-12-31	1402
2015-03-31	864
2015-06-30	629
2015-09-30	1303
2015-12-31	579
2016-03-31	641
2016-06-30	685
2016-09-30	721
2016-12-31	693
2017-03-31	549
2017-06-30	327
2017-09-30	365
2017-12-31	650
2018-03-31	740
2018-06-30	462
2018-09-30	455
2018-12-31	525
2019-03-31	713
2019-06-30	783
2019-09-30	855
2019-12-31	844
2020-03-31	846
2020-06-30	1472
2020-09-30	1498
2020-12-31	1642
2021-03-31	1562
2021-06-30	1407
2021-09-30	1270
2021-12-31	1329
2022-03-31	2084
2022-06-30	594
2022-09-30	748
2022-12-31	811
2023-03-31	776
2023-06-30	792
2023-09-30	929