Quarter	US dollars
1999-03-31	226
1999-06-30	226
1999-09-30	218
1999-12-31	236
2000-03-31	224
2000-06-30	224
2000-09-30	216
2000-12-31	222
2001-03-31	227
2001-06-30	245
2001-09-30	297
2001-12-31	260
2002-03-31	254
2002-06-30	272
2002-09-30	265
2002-12-31	263
2003-03-31	277
2003-06-30	274
2003-09-30	276
2003-12-31	289
2004-03-31	273
2004-06-30	263
2004-09-30	251
2004-12-31	275
2005-03-31	278
2005-06-30	258
2005-09-30	241
2005-12-31	250
2006-03-31	258
2006-06-30	261
2006-09-30	292
2006-12-31	286
2007-03-31	268
2007-06-30	218
2007-09-30	218
2007-12-31	203
2008-03-31	218
2008-06-30	288
2008-09-30	272
2008-12-31	210
2009-03-31	196
2009-06-30	194
2009-09-30	180
2009-12-31	167
2010-03-31	148
2010-06-30	148
2010-09-30	142
2010-12-31	157
2011-03-31	138
2011-06-30	153
2011-09-30	173
2011-12-31	187
2012-03-31	175
2012-06-30	151
2012-09-30	156
2012-12-31	128
2013-03-31	112
2013-06-30	111
2013-09-30	118
2013-12-31	114
2014-03-31	101
2014-06-30	157
2014-09-30	134
2014-12-31	125
2015-03-31	128
2015-06-30	134
2015-09-30	111
2015-12-31	120
2016-03-31	123
2016-06-30	113
2016-09-30	110
2016-12-31	106
2017-03-31	103
2017-06-30	100
2017-09-30	102
2017-12-31	110
2018-03-31	93
2018-06-30	82
2018-09-30	84
2018-12-31	104
2019-03-31	77
2019-06-30	79
2019-09-30	77
2019-12-31	81
2020-03-31	79
2020-06-30	75
2020-09-30	76
2020-12-31	81
2021-03-31	79
2021-06-30	85
2021-09-30	81
2021-12-31	88
2022-03-31	96
2022-06-30	80
2022-09-30	66
2022-12-31	75
2023-03-31	83
2023-06-30	98
2023-09-30	88