Quarter	US dollars
2004-12-31	1770
2005-03-31	699
2005-06-30	491
2005-09-30	658
2005-12-31	762
2006-03-31	1089
2006-06-30	1102
2006-09-30	949
2006-12-31	1121
2007-03-31	1145
2007-06-30	965
2007-09-30	982
2007-12-31	792
2008-03-31	1314
2008-06-30	917
2008-09-30	966
2008-12-31	1422
2009-03-31	964
2009-06-30	922
2009-09-30	1131
2009-12-31	1142
2010-03-31	1761
2010-06-30	2023
2010-09-30	1892
2010-12-31	1944
2011-03-31	2677
2011-06-30	2338
2011-09-30	3108
2011-12-31	2081
2012-03-31	2814
2012-06-30	3046
2012-09-30	2498
2012-12-31	2614
2013-03-31	3244
2013-06-30	5040
2013-09-30	4889
2013-12-31	3109
2014-03-31	3006
2014-06-30	3151
2014-09-30	3011
2014-12-31	1700
2015-03-31	1782
2015-06-30	1644
2015-09-30	1533
2015-12-31	1307
2016-03-31	2612
2016-06-30	3019
2016-09-30	3522
2016-12-31	2123
2017-03-31	2899
2017-06-30	2446
2017-09-30	2837
2017-12-31	2884
2018-03-31	2755
2018-06-30	3361
2018-09-30	2547
2018-12-31	2639
2019-03-31	2801
2019-06-30	3207
2019-09-30	2259
2019-12-31	2310
2020-03-31	1958
2020-06-30	1928
2020-09-30	1901
2020-12-31	2668
2021-03-31	1898
2021-06-30	2568
2021-09-30	2527
2021-12-31	2919
2022-03-31	2969
2022-06-30	2790
2022-09-30	2455
2022-12-31	2715
2023-03-31	2846
2023-06-30	2515
2023-09-30	3211