Quarter	US dollars
2004-12-31	2365
2005-03-31	1779
2005-06-30	1656
2005-09-30	1663
2005-12-31	1497
2006-03-31	1155
2006-06-30	1480
2006-09-30	1831
2006-12-31	2065
2007-03-31	2097
2007-06-30	2883
2007-09-30	3036
2007-12-31	3299
2008-03-31	3899
2008-06-30	4275
2008-09-30	3580
2008-12-31	2097
2009-03-31	2782
2009-06-30	2663
2009-09-30	1930
2009-12-31	2078
2010-03-31	2066
2010-06-30	1848
2010-09-30	2785
2010-12-31	2589
2011-03-31	2219
2011-06-30	1962
2011-09-30	1633
2011-12-31	1721
2012-03-31	588
2012-06-30	469
2012-09-30	1269
2012-12-31	1365
2013-03-31	1123
2013-06-30	1166
2013-09-30	1360
2013-12-31	1645
2014-03-31	1617
2014-06-30	506
2014-09-30	426
2014-12-31	609
2015-03-31	518
2015-06-30	450
2015-09-30	562
2015-12-31	616
2016-03-31	513
2016-06-30	270
2016-09-30	495
2016-12-31	785
2017-03-31	532
2017-06-30	711
2017-09-30	932
2017-12-31	646
2018-03-31	740
2018-06-30	741
2018-09-30	657
2018-12-31	1306
2019-03-31	760
2019-06-30	908
2019-09-30	740
2019-12-31	768
2020-03-31	631
2020-06-30	730
2020-09-30	681
2020-12-31	714
2021-03-31	775
2021-06-30	701
2021-09-30	734
2021-12-31	794
2022-03-31	380
2022-06-30	727
2022-09-30	445
2022-12-31	462
2023-03-31	551
2023-06-30	595
2023-09-30	589