Quarter	US dollars
2004-12-31	257
2005-03-31	242
2005-06-30	229
2005-09-30	232
2005-12-31	203
2006-03-31	198
2006-06-30	181
2006-09-30	161
2006-12-31	160
2007-03-31	151
2007-06-30	171
2007-09-30	206
2007-12-31	195
2008-03-31	252
2008-06-30	235
2008-09-30	242
2008-12-31	244
2009-03-31	258
2009-06-30	227
2009-09-30	278
2009-12-31	237
2010-03-31	262
2010-06-30	278
2010-09-30	337
2010-12-31	244
2011-03-31	261
2011-06-30	255
2011-09-30	159
2011-12-31	220
2012-03-31	150
2012-06-30	33
2012-09-30	234
2012-12-31	204
2013-03-31	241
2013-06-30	238
2013-09-30	219
2013-12-31	299
2014-03-31	110
2014-06-30	60
2014-09-30	45
2014-12-31	67
2015-03-31	70
2015-06-30	60
2015-09-30	76
2015-12-31	93
2016-03-31	76
2016-06-30	97
2016-09-30	92
2016-12-31	128
2017-03-31	60
2017-06-30	461
2017-09-30	496
2017-12-31	484
2018-03-31	450
2018-06-30	412
2018-09-30	419
2018-12-31	388
2019-03-31	369
2019-06-30	363
2019-09-30	362
2019-12-31	268
2020-03-31	262
2020-06-30	256
2020-09-30	256
2020-12-31	246
2021-03-31	241
2021-06-30	240
2021-09-30	232
2021-12-31	225
2022-03-31	211
2022-06-30	194
2022-09-30	192
2022-12-31	164
2023-03-31	159
2023-06-30	184
2023-09-30	181