Quarter	US dollars
2004-12-31	3400
2005-03-31	4342
2005-06-30	4660
2005-09-30	6732
2005-12-31	3519
2006-03-31	5486
2006-06-30	5106
2006-09-30	6707
2006-12-31	7838
2007-03-31	6927
2007-06-30	6719
2007-09-30	8343
2007-12-31	9833
2008-03-31	12644
2008-06-30	12319
2008-09-30	14059
2008-12-31	13337
2009-03-31	12001
2009-06-30	12252
2009-09-30	11640
2009-12-31	7179
2010-03-31	7611
2010-06-30	6652
2010-09-30	6220
2010-12-31	3299
2011-03-31	4394
2011-06-30	8460
2011-09-30	8369
2011-12-31	8228
2012-03-31	7585
2012-06-30	7115
2012-09-30	5944
2012-12-31	6359
2013-03-31	5811
2013-06-30	6546
2013-09-30	6764
2013-12-31	7965
2014-03-31	5881
2014-06-30	6598
2014-09-30	5173
2014-12-31	7035
2015-03-31	7339
2015-06-30	7397
2015-09-30	8820
2015-12-31	8199
2016-03-31	9801
2016-06-30	8719
2016-09-30	6459
2016-12-31	6382
2017-03-31	4955
2017-06-30	5939
2017-09-30	5844
2017-12-31	5480
2018-03-31	6748
2018-06-30	8480
2018-09-30	7969
2018-12-31	8866
2019-03-31	5979
2019-06-30	7727
2019-09-30	7274
2019-12-31	5929
2020-03-31	8020
2020-06-30	6449
2020-09-30	5720
2020-12-31	8595
2021-03-31	9402
2021-06-30	11432
2021-09-30	12583
2021-12-31	11968
2022-03-31	12226
2022-06-30	11818
2022-09-30	13494
2022-12-31	9187
2023-03-31	8715
2023-06-30	10751
2023-09-30	12127