Quarter	US dollars
2004-12-31	1058
2005-03-31	955
2005-06-30	973
2005-09-30	1003
2005-12-31	1775
2006-03-31	1963
2006-06-30	2097
2006-09-30	1958
2006-12-31	1896
2007-03-31	1806
2007-06-30	1788
2007-09-30	1834
2007-12-31	1581
2008-03-31	1395
2008-06-30	1035
2008-09-30	959
2008-12-31	710
2009-03-31	698
2009-06-30	585
2009-09-30	520
2009-12-31	770
2010-03-31	604
2010-06-30	739
2010-09-30	747
2010-12-31	1834
2011-03-31	1547
2011-06-30	1812
2011-09-30	6169
2011-12-31	6455
2012-03-31	8545
2012-06-30	7921
2012-09-30	7672
2012-12-31	11133
2013-03-31	13919
2013-06-30	12683
2013-09-30	12152
2013-12-31	10403
2014-03-31	9760
2014-06-30	12017
2014-09-30	10241
2014-12-31	7431
2015-03-31	6843
2015-06-30	6584
2015-09-30	5751
2015-12-31	5184
2016-03-31	5501
2016-06-30	4821
2016-09-30	4905
2016-12-31	4472
2017-03-31	4524
2017-06-30	3415
2017-09-30	3409
2017-12-31	3221
2018-03-31	3364
2018-06-30	3449
2018-09-30	3835
2018-12-31	3506
2019-03-31	2670
2019-06-30	2141
2019-09-30	2055
2019-12-31	2799
2020-03-31	2406
2020-06-30	2375
2020-09-30	2505
2020-12-31	2507
2021-03-31	2545
2021-06-30	2167
2021-09-30	2323
2021-12-31	2098
2022-03-31	2372
2022-06-30	2278
2022-09-30	2263
2022-12-31	2323
2023-03-31	2821
2023-06-30	1857
2023-09-30	1984