Quarter	US dollars
2004-12-31	662
2005-03-31	2210
2005-06-30	2533
2005-09-30	2475
2005-12-31	496
2006-03-31	1124
2006-06-30	1504
2006-09-30	1226
2006-12-31	1738
2007-03-31	1795
2007-06-30	1858
2007-09-30	1828
2007-12-31	1927
2008-03-31	2238
2008-06-30	2364
2008-09-30	1493
2008-12-31	1834
2009-03-31	1667
2009-06-30	3010
2009-09-30	3645
2009-12-31	8817
2010-03-31	10051
2010-06-30	10206
2010-09-30	11339
2010-12-31	8142
2011-03-31	10062
2011-06-30	9052
2011-09-30	5548
2011-12-31	5815
2012-03-31	5873
2012-06-30	4985
2012-09-30	6180
2012-12-31	3006
2013-03-31	2031
2013-06-30	1718
2013-09-30	1751
2013-12-31	1721
2014-03-31	1504
2014-06-30	1359
2014-09-30	1519
2014-12-31	1391
2015-03-31	1569
2015-06-30	1118
2015-09-30	1421
2015-12-31	910
2016-03-31	1260
2016-06-30	671
2016-09-30	638
2016-12-31	680
2017-03-31	998
2017-06-30	1354
2017-09-30	1154
2017-12-31	1148
2018-03-31	1110
2018-06-30	1237
2018-09-30	1257
2018-12-31	1039
2019-03-31	1216
2019-06-30	1049
2019-09-30	918
2019-12-31	779
2020-03-31	1048
2020-06-30	1224
2020-09-30	606
2020-12-31	693
2021-03-31	541
2021-06-30	557
2021-09-30	622
2021-12-31	668
2022-03-31	549
2022-06-30	1123
2022-09-30	734
2022-12-31	574
2023-03-31	749
2023-06-30	516
2023-09-30	559