Quarter	US dollars
2004-12-31	1546
2005-03-31	2250
2005-06-30	4037
2005-09-30	3433
2005-12-31	11439
2006-03-31	6581
2006-06-30	7361
2006-09-30	3544
2006-12-31	3681
2007-03-31	3948
2007-06-30	7460
2007-09-30	8315
2007-12-31	2670
2008-03-31	3409
2008-06-30	2716
2008-09-30	5890
2008-12-31	3015
2009-03-31	4623
2009-06-30	6192
2009-09-30	12850
2009-12-31	12113
2010-03-31	6965
2010-06-30	10370
2010-09-30	5628
2010-12-31	5241
2011-03-31	9552
2011-06-30	11777
2011-09-30	11709
2011-12-31	8047
2012-03-31	9630
2012-06-30	12638
2012-09-30	8052
2012-12-31	6451
2013-03-31	5723
2013-06-30	6695
2013-09-30	4052
2013-12-31	2096
2014-03-31	4780
2014-06-30	6829
2014-09-30	9995
2014-12-31	6474
2015-03-31	3496
2015-06-30	3018
2015-09-30	879
2015-12-31	1000
2016-03-31	2939
2016-06-30	1211
2016-09-30	1154
2016-12-31	471
2017-03-31	366
2017-06-30	891
2017-09-30	582
2017-12-31	944
2018-03-31	1284
2018-06-30	2808
2018-09-30	1867
2018-12-31	771
2019-03-31	1410
2019-06-30	1431
2019-09-30	1347
2019-12-31	1209
2020-03-31	1842
2020-06-30	16786
2020-09-30	1274
2020-12-31	19421
2021-03-31	2893
2021-06-30	4971
2021-09-30	3604
2021-12-31	4270
2022-03-31	3822
2022-06-30	3831
2022-09-30	2867
2022-12-31	3497
2023-03-31	5070
2023-06-30	5663
2023-09-30	7924