Quarter	US dollars
2004-12-31	966
2005-03-31	1501
2005-06-30	762
2005-09-30	497
2005-12-31	664
2006-03-31	744
2006-06-30	1640
2006-09-30	1782
2006-12-31	2012
2007-03-31	2616
2007-06-30	1886
2007-09-30	2587
2007-12-31	2184
2008-03-31	2822
2008-06-30	2476
2008-09-30	2459
2008-12-31	2382
2009-03-31	2378
2009-06-30	3243
2009-09-30	2989
2009-12-31	2966
2010-03-31	3777
2010-06-30	4025
2010-09-30	4912
2010-12-31	7746
2011-03-31	6944
2011-06-30	7297
2011-09-30	5601
2011-12-31	5648
2012-03-31	4432
2012-06-30	5410
2012-09-30	7015
2012-12-31	8202
2013-03-31	9227
2013-06-30	9843
2013-09-30	7485
2013-12-31	7639
2014-03-31	7079
2014-06-30	6526
2014-09-30	5896
2014-12-31	4592
2015-03-31	4776
2015-06-30	5604
2015-09-30	5885
2015-12-31	6162
2016-03-31	6660
2016-06-30	6794
2016-09-30	5642
2016-12-31	5658
2017-03-31	6047
2017-06-30	5417
2017-09-30	5884
2017-12-31	4922
2018-03-31	5269
2018-06-30	5446
2018-09-30	5610
2018-12-31	4793
2019-03-31	4968
2019-06-30	2529
2019-09-30	3463
2019-12-31	2993
2020-03-31	3752
2020-06-30	5030
2020-09-30	3474
2020-12-31	3142
2021-03-31	3077
2021-06-30	2631
2021-09-30	2845
2021-12-31	2915
2022-03-31	2965
2022-06-30	2501
2022-09-30	3199
2022-12-31	3420
2023-03-31	3517
2023-06-30	3023
2023-09-30	3644