Quarter	US dollars
1999-03-31	158
1999-06-30	127
1999-09-30	107
1999-12-31	96
2000-03-31	106
2000-06-30	93
2000-09-30	95
2000-12-31	106
2001-03-31	166
2001-06-30	134
2001-09-30	146
2001-12-31	187
2002-03-31	178
2002-06-30	95
2002-09-30	106
2002-12-31	208
2003-03-31	170
2003-06-30	155
2003-09-30	241
2003-12-31	259
2004-03-31	201
2004-06-30	154
2004-09-30	170
2004-12-31	208
2005-03-31	189
2005-06-30	337
2005-09-30	338
2005-12-31	372
2006-03-31	271
2006-06-30	300
2006-09-30	387
2006-12-31	356
2007-03-31	347
2007-06-30	243
2007-09-30	235
2007-12-31	293
2008-03-31	306
2008-06-30	274
2008-09-30	267
2008-12-31	231
2009-03-31	194
2009-06-30	194
2009-09-30	209
2009-12-31	296
2010-03-31	349
2010-06-30	279
2010-09-30	256
2010-12-31	275
2011-03-31	275
2011-06-30	273
2011-09-30	137
2011-12-31	263
2012-03-31	197
2012-06-30	174
2012-09-30	204
2012-12-31	143
2013-03-31	155
2013-06-30	145
2013-09-30	188
2013-12-31	140
2014-03-31	129
2014-06-30	121
2014-09-30	79
2014-12-31	109
2015-03-31	126
2015-06-30	168
2015-09-30	185
2015-12-31	169
2016-03-31	156
2016-06-30	187
2016-09-30	155
2016-12-31	220
2017-03-31	226
2017-06-30	133
2017-09-30	180
2017-12-31	343
2018-03-31	124
2018-06-30	291
2018-09-30	298
2018-12-31	222
2019-03-31	232
2019-06-30	153
2019-09-30	131
2019-12-31	115
2020-03-31	87
2020-06-30	105
2020-09-30	101
2020-12-31	94
2021-03-31	81
2021-06-30	90
2021-09-30	142
2021-12-31	98
2022-03-31	112
2022-06-30	95
2022-09-30	122
2022-12-31	78
2023-03-31	228
2023-06-30	341
2023-09-30	386