Quarter	US dollars
1999-09-30	453
1999-12-31	584
2000-03-31	697
2000-06-30	671
2000-09-30	671
2000-12-31	664
2001-03-31	617
2001-06-30	734
2001-09-30	794
2001-12-31	779
2002-03-31	856
2002-06-30	777
2002-09-30	716
2002-12-31	766
2003-03-31	661
2003-06-30	606
2003-09-30	620
2003-12-31	634
2004-03-31	737
2004-06-30	754
2004-09-30	865
2004-12-31	685
2005-03-31	684
2005-06-30	629
2005-09-30	932
2005-12-31	745
2006-03-31	744
2006-06-30	1021
2006-09-30	809
2006-12-31	1000
2007-03-31	1551
2007-06-30	2374
2007-09-30	2457
2007-12-31	2415
2008-03-31	2858
2008-06-30	2826
2008-09-30	3473
2008-12-31	2608
2009-03-31	2098
2009-06-30	2287
2009-09-30	2343
2009-12-31	2779
2010-03-31	2880
2010-06-30	3531
2010-09-30	3357
2010-12-31	3173
2011-03-31	2711
2011-06-30	3007
2011-09-30	2666
2011-12-31	2904
2012-03-31	2189
2012-06-30	3476
2012-09-30	2112
2012-12-31	1628
2013-03-31	1495
2013-06-30	1310
2013-09-30	1312
2013-12-31	1304
2014-03-31	1821
2014-06-30	1747
2014-09-30	1576
2014-12-31	1344
2015-03-31	1976
2015-06-30	1689
2015-09-30	1074
2015-12-31	694
2016-03-31	755
2016-06-30	792
2016-09-30	863
2016-12-31	639
2017-03-31	718
2017-06-30	986
2017-09-30	1107
2017-12-31	1121
2018-03-31	926
2018-06-30	724
2018-09-30	484
2018-12-31	525
2019-03-31	848
2019-06-30	672
2019-09-30	716
2019-12-31	744
2020-03-31	867
2020-06-30	763
2020-09-30	748
2020-12-31	753
2021-03-31	571
2021-06-30	561
2021-09-30	511
2021-12-31	469
2022-03-31	546
2022-06-30	374
2022-09-30	336
2022-12-31	711
2023-03-31	1087
2023-06-30	1257
2023-09-30	1140