Quarter	US dollars
2004-12-31	1114
2005-03-31	1238
2005-06-30	1441
2005-09-30	1567
2005-12-31	1282
2006-03-31	1578
2006-06-30	3401
2006-09-30	3084
2006-12-31	3206
2007-03-31	1765
2007-06-30	1322
2007-09-30	1481
2007-12-31	1029
2008-03-31	1528
2008-06-30	794
2008-09-30	1190
2008-12-31	1461
2009-03-31	1718
2009-06-30	893
2009-09-30	1678
2009-12-31	1918
2010-03-31	1747
2010-06-30	1055
2010-09-30	2048
2010-12-31	1680
2011-03-31	1500
2011-06-30	1529
2011-09-30	2183
2011-12-31	2185
2012-03-31	1983
2012-06-30	2000
2012-09-30	2011
2012-12-31	2724
2013-03-31	2373
2013-06-30	1899
2013-09-30	1948
2013-12-31	1906
2014-03-31	1642
2014-06-30	1648
2014-09-30	733
2014-12-31	727
2015-03-31	733
2015-06-30	1582
2015-09-30	1504
2015-12-31	1553
2016-03-31	1541
2016-06-30	1614
2016-09-30	1556
2016-12-31	1591
2017-03-31	1648
2017-06-30	705
2017-09-30	704
2017-12-31	712
2018-03-31	700
2018-06-30	704
2018-09-30	700
2018-12-31	700
2019-03-31	705
2019-06-30	700
2019-09-30	723
2019-12-31	875
2020-03-31	874
2020-06-30	870
2020-09-30	859
2020-12-31	1033
2021-03-31	1076
2021-06-30	875
2021-09-30	895
2021-12-31	1071
2022-03-31	1028
2022-06-30	1134
2022-09-30	225
2022-12-31	224
2023-03-31	217
2023-06-30	216
2023-09-30	159