Quarter	US dollars
2004-12-31	238
2005-03-31	223
2005-06-30	213
2005-09-30	214
2005-12-31	189
2006-03-31	184
2006-06-30	168
2006-09-30	148
2006-12-31	149
2007-03-31	139
2007-06-30	163
2007-09-30	194
2007-12-31	175
2008-03-31	203
2008-06-30	231
2008-09-30	239
2008-12-31	242
2009-03-31	254
2009-06-30	221
2009-09-30	272
2009-12-31	234
2010-03-31	259
2010-06-30	275
2010-09-30	336
2010-12-31	243
2011-03-31	256
2011-06-30	254
2011-09-30	159
2011-12-31	240
2012-03-31	147
2012-06-30	35
2012-09-30	236
2012-12-31	204
2013-03-31	243
2013-06-30	241
2013-09-30	222
2013-12-31	304
2014-03-31	115
2014-06-30	65
2014-09-30	45
2014-12-31	67
2015-03-31	70
2015-06-30	53
2015-09-30	70
2015-12-31	89
2016-03-31	75
2016-06-30	97
2016-09-30	92
2016-12-31	128
2017-03-31	60
2017-06-30	242
2017-09-30	303
2017-12-31	308
2018-03-31	268
2018-06-30	235
2018-09-30	241
2018-12-31	207
2019-03-31	192
2019-06-30	193
2019-09-30	197
2019-12-31	185
2020-03-31	179
2020-06-30	179
2020-09-30	184
2020-12-31	172
2021-03-31	166
2021-06-30	171
2021-09-30	163
2021-12-31	156
2022-03-31	138
2022-06-30	123
2022-09-30	121
2022-12-31	92
2023-03-31	88
2023-06-30	112
2023-09-30	114