Quarter	US dollars
2004-12-31	804
2005-03-31	981
2005-06-30	991
2005-09-30	922
2005-12-31	1033
2006-03-31	935
2006-06-30	1054
2006-09-30	932
2006-12-31	980
2007-03-31	879
2007-06-30	929
2007-09-30	850
2007-12-31	826
2008-03-31	1101
2008-06-30	1296
2008-09-30	945
2008-12-31	802
2009-03-31	707
2009-06-30	715
2009-09-30	597
2009-12-31	1321
2010-03-31	1315
2010-06-30	1767
2010-09-30	1791
2010-12-31	1525
2011-03-31	941
2011-06-30	915
2011-09-30	790
2011-12-31	889
2012-03-31	943
2012-06-30	936
2012-09-30	1150
2012-12-31	1015
2013-03-31	918
2013-06-30	757
2013-09-30	580
2013-12-31	1588
2014-03-31	1687
2014-06-30	1166
2014-09-30	981
2014-12-31	1047
2015-03-31	1318
2015-06-30	1557
2015-09-30	1893
2015-12-31	1740
2016-03-31	1472
2016-06-30	1442
2016-09-30	1247
2016-12-31	1187
2017-03-31	958
2017-06-30	2485
2017-09-30	2274
2017-12-31	2980
2018-03-31	3145
2018-06-30	2887
2018-09-30	2630
2018-12-31	2901
2019-03-31	2115
2019-06-30	1758
2019-09-30	1928
2019-12-31	1670
2020-03-31	1777
2020-06-30	1673
2020-09-30	1906
2020-12-31	1953
2021-03-31	2085
2021-06-30	2210
2021-09-30	1708
2021-12-31	1535
2022-03-31	1564
2022-06-30	1518
2022-09-30	1500
2022-12-31	1453
2023-03-31	1424
2023-06-30	1391
2023-09-30	1193