Quarter	US dollars
2004-12-31	7551
2005-03-31	10263
2005-06-30	7267
2005-09-30	6927
2005-12-31	3389
2006-03-31	2236
2006-06-30	2291
2006-09-30	3656
2006-12-31	2883
2007-03-31	3954
2007-06-30	6673
2007-09-30	6772
2007-12-31	2288
2008-03-31	2409
2008-06-30	3429
2008-09-30	6059
2008-12-31	4891
2009-03-31	9175
2009-06-30	6301
2009-09-30	10368
2009-12-31	6278
2010-03-31	5313
2010-06-30	5479
2010-09-30	5801
2010-12-31	5049
2011-03-31	5242
2011-06-30	5493
2011-09-30	6277
2011-12-31	5897
2012-03-31	8299
2012-06-30	7478
2012-09-30	8312
2012-12-31	7914
2013-03-31	7539
2013-06-30	7509
2013-09-30	6104
2013-12-31	4975
2014-03-31	8328
2014-06-30	11231
2014-09-30	7248
2014-12-31	5341
2015-03-31	5905
2015-06-30	6361
2015-09-30	5609
2015-12-31	4667
2016-03-31	4085
2016-06-30	3363
2016-09-30	3995
2016-12-31	2239
2017-03-31	2276
2017-06-30	3157
2017-09-30	3398
2017-12-31	3337
2018-03-31	5888
2018-06-30	5008
2018-09-30	4036
2018-12-31	4275
2019-03-31	5417
2019-06-30	3372
2019-09-30	1924
2019-12-31	2518
2020-03-31	2281
2020-06-30	3730
2020-09-30	2496
2020-12-31	2327
2021-03-31	2394
2021-06-30	2226
2021-09-30	3034
2021-12-31	2496
2022-03-31	3513
2022-06-30	3171
2022-09-30	2205
2022-12-31	1612
2023-03-31	1189
2023-06-30	2945
2023-09-30	2483