Quarter	US dollars
1999-09-30	155
1999-12-31	161
2000-03-31	182
2000-06-30	186
2000-09-30	210
2000-12-31	247
2001-03-31	370
2001-06-30	387
2001-09-30	469
2001-12-31	322
2002-03-31	312
2002-06-30	1021
2002-09-30	720
2002-12-31	789
2003-03-31	536
2003-06-30	620
2003-09-30	719
2003-12-31	820
2004-03-31	801
2004-06-30	528
2004-09-30	688
2004-12-31	958
2005-03-31	775
2005-06-30	1233
2005-09-30	943
2005-12-31	956
2006-03-31	1091
2006-06-30	1204
2006-09-30	884
2006-12-31	1341
2007-03-31	1406
2007-06-30	2018
2007-09-30	2139
2007-12-31	2132
2008-03-31	3528
2008-06-30	4283
2008-09-30	3457
2008-12-31	6977
2009-03-31	5423
2009-06-30	3865
2009-09-30	4481
2009-12-31	3071
2010-03-31	3212
2010-06-30	4372
2010-09-30	5179
2010-12-31	3505
2011-03-31	4169
2011-06-30	3805
2011-09-30	4135
2011-12-31	3358
2012-03-31	4368
2012-06-30	4017
2012-09-30	3798
2012-12-31	3573
2013-03-31	2827
2013-06-30	2125
2013-09-30	1718
2013-12-31	1730
2014-03-31	2289
2014-06-30	2141
2014-09-30	2631
2014-12-31	2948
2015-03-31	3211
2015-06-30	2265
2015-09-30	2416
2015-12-31	2184
2016-03-31	1937
2016-06-30	2317
2016-09-30	2124
2016-12-31	1599
2017-03-31	1362
2017-06-30	1231
2017-09-30	1242
2017-12-31	1127
2018-03-31	1089
2018-06-30	932
2018-09-30	1463
2018-12-31	1226
2019-03-31	1127
2019-06-30	995
2019-09-30	1177
2019-12-31	1189
2020-03-31	2121
2020-06-30	1919
2020-09-30	1606
2020-12-31	1473
2021-03-31	1166
2021-06-30	1140
2021-09-30	987
2021-12-31	1112
2022-03-31	1274
2022-06-30	1777
2022-09-30	2428
2022-12-31	3101
2023-03-31	1751
2023-06-30	1577
2023-09-30	1809