Quarter	US dollars
1999-09-30	504
1999-12-31	476
2000-03-31	474
2000-06-30	448
2000-09-30	411
2000-12-31	363
2001-03-31	372
2001-06-30	354
2001-09-30	363
2001-12-31	365
2002-03-31	406
2002-06-30	436
2002-09-30	420
2002-12-31	406
2003-03-31	425
2003-06-30	444
2003-09-30	445
2003-12-31	510
2004-03-31	513
2004-06-30	540
2004-09-30	510
2004-12-31	599
2005-03-31	614
2005-06-30	667
2005-09-30	743
2005-12-31	800
2006-03-31	772
2006-06-30	984
2006-09-30	1102
2006-12-31	1076
2007-03-31	1108
2007-06-30	1176
2007-09-30	1343
2007-12-31	1585
2008-03-31	1751
2008-06-30	2020
2008-09-30	2249
2008-12-31	2007
2009-03-31	2091
2009-06-30	1922
2009-09-30	2089
2009-12-31	1943
2010-03-31	2069
2010-06-30	2152
2010-09-30	2324
2010-12-31	2437
2011-03-31	2635
2011-06-30	3173
2011-09-30	2787
2011-12-31	2597
2012-03-31	2864
2012-06-30	2878
2012-09-30	3030
2012-12-31	2739
2013-03-31	2742
2013-06-30	2944
2013-09-30	3260
2013-12-31	3132
2014-03-31	3561
2014-06-30	4192
2014-09-30	4019
2014-12-31	4169
2015-03-31	4239
2015-06-30	5131
2015-09-30	4496
2015-12-31	4542
2016-03-31	4178
2016-06-30	4828
2016-09-30	4951
2016-12-31	5402
2017-03-31	5366
2017-06-30	5617
2017-09-30	6149
2017-12-31	5975
2018-03-31	6667
2018-06-30	6917
2018-09-30	7083
2018-12-31	7071
2019-03-31	7576
2019-06-30	7722
2019-09-30	6993
2019-12-31	6332
2020-03-31	6553
2020-06-30	7184
2020-09-30	6726
2020-12-31	6708
2021-03-31	7797
2021-06-30	8676
2021-09-30	8220
2021-12-31	8683
2022-03-31	8137
2022-06-30	8128
2022-09-30	8485
2022-12-31	8834
2023-03-31	8241
2023-06-30	7102
2023-09-30	6600