Quarter	US dollars
1999-03-31	56
1999-06-30	46
1999-09-30	49
1999-12-31	54
2000-03-31	46
2000-06-30	45
2000-09-30	48
2000-12-31	44
2001-03-31	53
2001-06-30	84
2001-09-30	64
2001-12-31	44
2002-03-31	67
2002-06-30	147
2002-09-30	69
2002-12-31	125
2003-03-31	72
2003-06-30	85
2003-09-30	77
2003-12-31	121
2004-03-31	155
2004-06-30	208
2004-09-30	418
2004-12-31	180
2005-03-31	270
2005-06-30	182
2005-09-30	271
2005-12-31	178
2006-03-31	251
2006-06-30	185
2006-09-30	288
2006-12-31	183
2007-03-31	262
2007-06-30	210
2007-09-30	264
2007-12-31	295
2008-03-31	732
2008-06-30	248
2008-09-30	1115
2008-12-31	218
2009-03-31	307
2009-06-30	509
2009-09-30	910
2009-12-31	457
2010-03-31	418
2010-06-30	242
2010-09-30	240
2010-12-31	369
2011-03-31	346
2011-06-30	321
2011-09-30	372
2011-12-31	540
2012-03-31	331
2012-06-30	321
2012-09-30	298
2012-12-31	263
2013-03-31	271
2013-06-30	225
2013-09-30	224
2013-12-31	268
2014-03-31	262
2014-06-30	247
2014-09-30	306
2014-12-31	166
2015-03-31	321
2015-06-30	327
2015-09-30	318
2015-12-31	241
2016-03-31	349
2016-06-30	352
2016-09-30	342
2016-12-31	329
2017-03-31	361
2017-06-30	346
2017-09-30	317
2017-12-31	388
2018-03-31	467
2018-06-30	403
2018-09-30	332
2018-12-31	342
2019-03-31	125
2019-06-30	306
2019-09-30	174
2019-12-31	166
2020-03-31	127
2020-06-30	287
2020-09-30	334
2020-12-31	305
2021-03-31	279
2021-06-30	293
2021-09-30	242
2021-12-31	240
2022-03-31	240
2022-06-30	415
2022-09-30	358
2022-12-31	1279
2023-03-31	1379
2023-06-30	1743
2023-09-30	1622