Quarter	US dollars
1999-03-31	523
1999-06-30	548
1999-09-30	607
1999-12-31	574
2000-03-31	523
2000-06-30	624
2000-09-30	616
2000-12-31	495
2001-03-31	533
2001-06-30	507
2001-09-30	626
2001-12-31	511
2002-03-31	566
2002-06-30	468
2002-09-30	467
2002-12-31	550
2003-03-31	407
2003-06-30	410
2003-09-30	434
2003-12-31	472
2004-03-31	410
2004-06-30	475
2004-09-30	437
2004-12-31	455
2005-03-31	641
2005-06-30	740
2005-09-30	763
2005-12-31	787
2006-03-31	834
2006-06-30	810
2006-09-30	786
2006-12-31	887
2007-03-31	735
2007-06-30	775
2007-09-30	991
2007-12-31	728
2008-03-31	835
2008-06-30	945
2008-09-30	1182
2008-12-31	1131
2009-03-31	1152
2009-06-30	711
2009-09-30	895
2009-12-31	814
2010-03-31	790
2010-06-30	835
2010-09-30	784
2010-12-31	769
2011-03-31	889
2011-06-30	1160
2011-09-30	1198
2011-12-31	1150
2012-03-31	1391
2012-06-30	1432
2012-09-30	1444
2012-12-31	1277
2013-03-31	1662
2013-06-30	1514
2013-09-30	1144
2013-12-31	1244
2014-03-31	1070
2014-06-30	766
2014-09-30	796
2014-12-31	840
2015-03-31	953
2015-06-30	888
2015-09-30	895
2015-12-31	882
2016-03-31	888
2016-06-30	865
2016-09-30	880
2016-12-31	757
2017-03-31	814
2017-06-30	932
2017-09-30	947
2017-12-31	916
2018-03-31	916
2018-06-30	1044
2018-09-30	1029
2018-12-31	1218
2019-03-31	1235
2019-06-30	1910
2019-09-30	1444
2019-12-31	2236
2020-03-31	1963
2020-06-30	1691
2020-09-30	1362
2020-12-31	1469
2021-03-31	1719
2021-06-30	1789
2021-09-30	1840
2021-12-31	1532
2022-03-31	1991
2022-06-30	1999
2022-09-30	1825
2022-12-31	1603
2023-03-31	2638
2023-06-30	3236
2023-09-30	3361