Quarter	US dollars
2004-12-31	1069
2005-03-31	1435
2005-06-30	1344
2005-09-30	1376
2005-12-31	1308
2006-03-31	1492
2006-06-30	2480
2006-09-30	1517
2006-12-31	1485
2007-03-31	1596
2007-06-30	1703
2007-09-30	1459
2007-12-31	1499
2008-03-31	1640
2008-06-30	1706
2008-09-30	1909
2008-12-31	1198
2009-03-31	884
2009-06-30	1008
2009-09-30	1072
2009-12-31	1163
2010-03-31	1125
2010-06-30	2149
2010-09-30	3701
2010-12-31	3516
2011-03-31	4165
2011-06-30	3161
2011-09-30	3670
2011-12-31	3349
2012-03-31	3220
2012-06-30	3691
2012-09-30	3469
2012-12-31	3078
2013-03-31	4109
2013-06-30	3851
2013-09-30	3572
2013-12-31	3719
2014-03-31	3568
2014-06-30	2826
2014-09-30	2977
2014-12-31	2460
2015-03-31	2503
2015-06-30	2613
2015-09-30	2433
2015-12-31	2310
2016-03-31	1577
2016-06-30	1554
2016-09-30	1403
2016-12-31	1924
2017-03-31	2106
2017-06-30	1981
2017-09-30	1678
2017-12-31	1708
2018-03-31	1841
2018-06-30	1705
2018-09-30	1660
2018-12-31	1608
2019-03-31	2473
2019-06-30	2574
2019-09-30	1591
2019-12-31	2227
2020-03-31	2230
2020-06-30	2235
2020-09-30	2120
2020-12-31	2030
2021-03-31	2158
2021-06-30	2045
2021-09-30	2108
2021-12-31	2526
2022-03-31	2889
2022-06-30	2750
2022-09-30	3688
2022-12-31	3329
2023-03-31	3641
2023-06-30	3826
2023-09-30	3441