Quarter	US dollars
1999-09-30	425
1999-12-31	787
2000-03-31	680
2000-06-30	730
2000-09-30	724
2000-12-31	724
2001-03-31	782
2001-06-30	883
2001-09-30	905
2001-12-31	817
2002-03-31	900
2002-06-30	885
2002-09-30	967
2002-12-31	925
2003-03-31	1023
2003-06-30	1129
2003-09-30	1268
2003-12-31	1450
2004-03-31	1355
2004-06-30	1393
2004-09-30	1408
2004-12-31	1613
2005-03-31	1571
2005-06-30	1540
2005-09-30	1541
2005-12-31	1468
2006-03-31	2182
2006-06-30	2057
2006-09-30	2066
2006-12-31	2331
2007-03-31	2401
2007-06-30	2354
2007-09-30	2437
2007-12-31	2415
2008-03-31	2272
2008-06-30	2482
2008-09-30	2495
2008-12-31	2366
2009-03-31	1996
2009-06-30	2292
2009-09-30	2409
2009-12-31	2343
2010-03-31	2431
2010-06-30	2349
2010-09-30	2518
2010-12-31	2522
2011-03-31	2666
2011-06-30	2574
2011-09-30	1971
2011-12-31	1640
2012-03-31	649
2012-06-30	657
2012-09-30	709
2012-12-31	757
2013-03-31	715
2013-06-30	767
2013-09-30	797
2013-12-31	897
2014-03-31	1817
2014-06-30	1971
2014-09-30	1902
2014-12-31	2048
2015-03-31	1911
2015-06-30	1921
2015-09-30	1828
2015-12-31	1729
2016-03-31	1776
2016-06-30	1900
2016-09-30	1943
2016-12-31	1810
2017-03-31	1773
2017-06-30	1195
2017-09-30	1150
2017-12-31	1390
2018-03-31	1196
2018-06-30	1043
2018-09-30	992
2018-12-31	1131
2019-03-31	1173
2019-06-30	1163
2019-09-30	1231
2019-12-31	1194
2020-03-31	1201
2020-06-30	1074
2020-09-30	1104
2020-12-31	1167
2021-03-31	1271
2021-06-30	1386
2021-09-30	1112
2021-12-31	933
2022-03-31	1015
2022-06-30	901
2022-09-30	895
2022-12-31	874
2023-03-31	819
2023-06-30	855
2023-09-30	939