Quarter	US dollars
2004-12-31	2607
2005-03-31	2830
2005-06-30	2789
2005-09-30	2777
2005-12-31	2743
2006-03-31	2848
2006-06-30	3353
2006-09-30	3234
2006-12-31	3139
2007-03-31	3652
2007-06-30	3323
2007-09-30	3910
2007-12-31	3958
2008-03-31	4977
2008-06-30	4476
2008-09-30	4516
2008-12-31	5290
2009-03-31	5192
2009-06-30	5318
2009-09-30	5345
2009-12-31	5689
2010-03-31	4929
2010-06-30	6097
2010-09-30	6606
2010-12-31	6567
2011-03-31	6880
2011-06-30	6418
2011-09-30	6560
2011-12-31	6648
2012-03-31	6193
2012-06-30	3791
2012-09-30	3231
2012-12-31	2973
2013-03-31	2473
2013-06-30	2427
2013-12-31	2302
2014-03-31	2566
2014-06-30	2780
2014-09-30	2489
2014-12-31	2146
2015-03-31	1765
2015-06-30	1239
2015-09-30	1012
2015-12-31	931
2016-03-31	975
2016-06-30	882
2016-09-30	1486
2016-12-31	1380
2017-03-31	1367
2017-06-30	1500
2017-09-30	1372
2017-12-31	1233
2018-03-31	1448
2018-06-30	1600
2018-09-30	1693
2018-12-31	1548
2019-03-31	1425
2019-06-30	1396
2019-09-30	1292
2019-12-31	1465
2020-03-31	1356
2020-06-30	4
2020-09-30	4
2020-12-31	1650
2021-03-31	1266
2021-06-30	1371
2021-09-30	1363
2021-12-31	1034
2022-03-31	1049
2022-06-30	5
2022-09-30	3
2022-12-31	3
2023-03-31	114
2023-06-30	112
2023-09-30	127