Quarter	US dollars
1999-09-30	407
1999-12-31	424
2000-03-31	408
2000-06-30	303
2000-09-30	305
2000-12-31	309
2001-03-31	390
2001-06-30	409
2001-09-30	442
2001-12-31	371
2002-03-31	325
2002-06-30	378
2002-09-30	550
2002-12-31	761
2003-03-31	748
2003-06-30	751
2003-09-30	889
2003-12-31	974
2004-03-31	1382
2004-06-30	1378
2004-09-30	1230
2004-12-31	1405
2005-03-31	1263
2005-06-30	1416
2005-09-30	1201
2005-12-31	1377
2006-03-31	1648
2006-06-30	1883
2006-09-30	5651
2006-12-31	6076
2007-03-31	2322
2007-06-30	2416
2007-09-30	2995
2007-12-31	3189
2008-03-31	3476
2008-06-30	3107
2008-09-30	2894
2008-12-31	2987
2009-03-31	3113
2009-06-30	3327
2009-09-30	3251
2009-12-31	3212
2010-03-31	3102
2010-06-30	3362
2010-09-30	3408
2010-12-31	4022
2011-03-31	3916
2011-06-30	3980
2011-09-30	3390
2011-12-31	3485
2012-03-31	4005
2012-06-30	3639
2012-09-30	3666
2012-12-31	3001
2013-03-31	2810
2013-06-30	2692
2013-09-30	2787
2013-12-31	3086
2014-03-31	3046
2014-06-30	3019
2014-09-30	1819
2014-12-31	2173
2015-03-31	1728
2015-06-30	1867
2015-09-30	1712
2015-12-31	1651
2016-03-31	1567
2016-06-30	1323
2016-09-30	1299
2016-12-31	1307
2017-03-31	1258
2017-06-30	1356
2017-09-30	1366
2017-12-31	1250
2018-03-31	1306
2018-06-30	1228
2018-09-30	1191
2018-12-31	1200
2019-03-31	1151
2019-06-30	1137
2019-09-30	1067
2019-12-31	1106
2020-03-31	1003
2020-06-30	913
2020-09-30	945
2020-12-31	1009
2021-03-31	1117
2021-06-30	1137
2021-09-30	1099
2021-12-31	1127
2022-03-31	1140
2022-06-30	1271
2022-09-30	1258
2022-12-31	1291
2023-03-31	1337
2023-06-30	1381
2023-09-30	1258