Quarter	US dollars
2004-12-31	1215
2005-03-31	1034
2005-06-30	787
2005-09-30	950
2005-12-31	934
2006-03-31	2225
2006-06-30	1119
2006-09-30	1222
2006-12-31	1495
2007-03-31	2567
2007-06-30	1695
2007-09-30	1685
2007-12-31	1828
2008-03-31	4675
2008-06-30	4643
2008-09-30	4434
2008-12-31	5323
2009-03-31	1364
2009-06-30	1644
2009-09-30	1745
2009-12-31	1269
2010-03-31	1465
2010-06-30	1665
2010-09-30	3876
2010-12-31	1706
2011-03-31	2063
2011-06-30	2378
2011-09-30	1866
2011-12-31	1483
2012-03-31	1489
2012-06-30	1575
2012-09-30	1660
2012-12-31	2116
2013-03-31	1574
2013-06-30	2603
2013-09-30	1592
2013-12-31	2023
2014-03-31	1936
2014-06-30	2428
2014-09-30	2121
2014-12-31	1534
2015-03-31	1243
2015-06-30	1375
2015-09-30	1401
2015-12-31	1503
2016-03-31	1445
2016-06-30	1668
2016-09-30	2086
2016-12-31	2005
2017-03-31	2054
2017-06-30	2708
2017-09-30	2161
2017-12-31	2418
2018-03-31	2736
2018-06-30	2815
2018-09-30	2192
2018-12-31	1513
2019-03-31	1965
2019-06-30	1418
2019-09-30	1420
2019-12-31	1227
2020-03-31	1341
2020-06-30	1439
2020-09-30	1286
2020-12-31	979
2021-03-31	1010
2021-06-30	1110
2021-09-30	809
2021-12-31	817
2022-03-31	1111
2022-06-30	934
2022-09-30	757
2022-12-31	736
2023-03-31	696
2023-06-30	743
2023-09-30	942