Quarter	US dollars
1999-09-30	357
1999-12-31	408
2000-03-31	1158
2000-06-30	706
2000-09-30	637
2000-12-31	976
2001-03-31	994
2001-06-30	949
2001-09-30	1042
2001-12-31	1189
2002-03-31	1219
2002-06-30	1134
2002-09-30	2285
2002-12-31	1080
2003-03-31	1353
2003-06-30	1010
2003-09-30	952
2003-12-31	2007
2004-03-31	1886
2004-06-30	1112
2004-09-30	1571
2004-12-31	1304
2005-03-31	2280
2005-06-30	1224
2005-09-30	2331
2005-12-31	1234
2006-03-31	2310
2006-06-30	1578
2006-09-30	2703
2006-12-31	1526
2007-03-31	2911
2007-06-30	1984
2007-09-30	3702
2007-12-31	1358
2008-03-31	2405
2008-06-30	1518
2008-09-30	2712
2008-12-31	1732
2009-03-31	1857
2009-06-30	2065
2009-09-30	2039
2009-12-31	3107
2010-03-31	3267
2010-06-30	3375
2010-09-30	4058
2010-12-31	5561
2011-03-31	5147
2011-06-30	5910
2011-09-30	5199
2011-12-31	5373
2012-03-31	4093
2012-06-30	4204
2012-09-30	4010
2012-12-31	4184
2013-03-31	3810
2013-06-30	4156
2013-09-30	3793
2013-12-31	3349
2014-03-31	3553
2014-06-30	3030
2014-09-30	3593
2014-12-31	2900
2015-03-31	2763
2015-06-30	3070
2015-09-30	2519
2015-12-31	3285
2016-03-31	3123
2016-06-30	3532
2016-09-30	3835
2016-12-31	2660
2017-03-31	3542
2017-06-30	3610
2017-09-30	3059
2017-12-31	2376
2018-03-31	4088
2018-06-30	4084
2018-09-30	4241
2018-12-31	2996
2019-03-31	2485
2019-06-30	3430
2019-09-30	2874
2019-12-31	2713
2020-03-31	3448
2020-06-30	4192
2020-09-30	3412
2020-12-31	7313
2021-03-31	5015
2021-06-30	3933
2021-09-30	4103
2021-12-31	11408
2022-03-31	7842
2022-06-30	6011
2022-09-30	9825
2022-12-31	5783
2023-03-31	9168
2023-06-30	10112
2023-09-30	8109