Quarter	US dollars
2004-12-31	4708
2005-03-31	5437
2005-06-30	6034
2005-09-30	6741
2005-12-31	5488
2006-03-31	6310
2006-06-30	6909
2006-09-30	7215
2006-12-31	7333
2007-03-31	7506
2007-06-30	9418
2007-09-30	8243
2007-12-31	8939
2008-03-31	9278
2008-06-30	9375
2008-09-30	7547
2008-12-31	8436
2009-03-31	6983
2009-06-30	3345
2009-09-30	4123
2009-12-31	3375
2010-03-31	2974
2010-06-30	3009
2010-09-30	2693
2010-12-31	2256
2011-03-31	4339
2011-06-30	2834
2011-09-30	3474
2011-12-31	3111
2012-03-31	3048
2012-06-30	3318
2012-09-30	3543
2012-12-31	3130
2013-03-31	2889
2013-06-30	2738
2013-09-30	2666
2013-12-31	2907
2014-03-31	3426
2014-06-30	3370
2014-09-30	3354
2014-12-31	3339
2015-03-31	2929
2015-06-30	2871
2015-09-30	3855
2015-12-31	2524
2016-03-31	2506
2016-06-30	2209
2016-09-30	2575
2016-12-31	1615
2017-03-31	1652
2017-06-30	1554
2017-09-30	1257
2017-12-31	1513
2018-03-31	1299
2018-06-30	1893
2018-09-30	1671
2018-12-31	1527
2019-03-31	1436
2019-06-30	1185
2019-09-30	1239
2019-12-31	1429
2020-03-31	1456
2020-06-30	1049
2020-09-30	1787
2020-12-31	3804
2021-03-31	2133
2021-06-30	2876
2021-09-30	2704
2021-12-31	1867
2022-03-31	637
2022-06-30	1615
2022-09-30	1433
2022-12-31	1130
2023-03-31	2639
2023-06-30	1531
2023-09-30	3019