Quarter	US dollars
2004-12-31	2559
2005-03-31	3964
2005-06-30	3863
2005-09-30	2972
2005-12-31	1940
2006-03-31	1622
2006-06-30	2334
2006-09-30	2046
2006-12-31	2292
2007-03-31	2518
2007-06-30	2648
2007-09-30	2691
2007-12-31	3852
2008-03-31	4508
2008-06-30	4104
2008-09-30	3215
2008-12-31	2552
2009-03-31	2840
2009-06-30	3788
2009-09-30	4078
2009-12-31	3562
2010-03-31	3713
2010-06-30	3860
2010-09-30	3857
2010-12-31	3887
2011-03-31	4016
2011-06-30	2884
2011-09-30	2038
2011-12-31	2143
2012-03-31	1648
2012-06-30	2157
2012-09-30	3239
2012-12-31	2116
2013-03-31	2051
2013-06-30	2836
2013-09-30	3030
2013-12-31	2532
2014-03-31	2101
2014-06-30	2163
2014-09-30	1694
2014-12-31	1556
2015-03-31	1605
2015-06-30	1563
2015-09-30	885
2015-12-31	788
2016-03-31	763
2016-06-30	847
2016-09-30	817
2016-12-31	870
2017-03-31	973
2017-06-30	638
2017-09-30	793
2017-12-31	1028
2018-03-31	835
2018-06-30	900
2018-09-30	687
2018-12-31	605
2019-03-31	606
2019-06-30	597
2019-09-30	797
2019-12-31	733
2020-03-31	768
2020-06-30	813
2020-09-30	1115
2020-12-31	569
2021-03-31	508
2021-06-30	527
2021-09-30	643
2021-12-31	683
2022-03-31	941
2022-06-30	633
2022-09-30	393
2022-12-31	552
2023-03-31	538
2023-06-30	491
2023-09-30	294