Quarter	US dollars
1999-09-30	204
1999-12-31	264
2000-03-31	177
2000-06-30	392
2000-09-30	157
2000-12-31	145
2001-03-31	127
2001-06-30	118
2001-09-30	72
2001-12-31	67
2002-03-31	50
2002-06-30	105
2002-09-30	109
2002-12-31	116
2003-03-31	120
2003-06-30	129
2003-09-30	140
2003-12-31	150
2004-03-31	162
2004-06-30	131
2004-09-30	109
2004-12-31	119
2005-03-31	125
2005-06-30	147
2005-09-30	150
2005-12-31	175
2006-03-31	180
2006-06-30	192
2006-09-30	163
2006-12-31	170
2007-03-31	355
2007-06-30	383
2007-09-30	383
2007-12-31	639
2008-03-31	1528
2008-06-30	1252
2008-09-30	1224
2008-12-31	1186
2009-03-31	1217
2009-06-30	1861
2009-09-30	902
2009-12-31	728
2010-03-31	3079
2010-06-30	2228
2010-09-30	1323
2010-12-31	1146
2011-03-31	1351
2011-06-30	1214
2011-09-30	1070
2011-12-31	968
2012-03-31	1120
2012-06-30	1164
2012-09-30	1063
2012-12-31	836
2013-03-31	683
2013-06-30	996
2013-09-30	917
2013-12-31	911
2014-03-31	774
2014-06-30	655
2014-09-30	783
2014-12-31	1441
2015-03-31	1598
2015-06-30	1422
2015-09-30	1786
2015-12-31	1381
2016-03-31	950
2016-06-30	810
2016-09-30	599
2016-12-31	552
2017-03-31	542
2017-06-30	439
2017-09-30	318
2017-12-31	313
2018-03-31	288
2018-06-30	395
2018-09-30	383
2018-12-31	340
2019-03-31	250
2019-06-30	122
2019-09-30	287
2019-12-31	305
2020-03-31	636
2020-06-30	423
2020-09-30	380
2020-12-31	450
2021-03-31	363
2021-06-30	330
2021-09-30	340
2021-12-31	296
2022-03-31	299
2022-06-30	472
2022-09-30	767
2022-12-31	354
2023-03-31	210
2023-06-30	582
2023-09-30	432