Quarter	US dollars
2004-12-31	255
2005-03-31	253
2005-06-30	249
2005-09-30	253
2005-12-31	244
2006-03-31	245
2006-06-30	263
2006-09-30	271
2006-12-31	284
2007-03-31	292
2007-06-30	289
2007-09-30	302
2007-12-31	213
2008-03-31	340
2008-06-30	346
2008-09-30	235
2008-12-31	211
2009-03-31	196
2009-06-30	224
2009-09-30	230
2009-12-31	237
2010-03-31	206
2010-06-30	233
2010-09-30	228
2010-12-31	244
2011-03-31	239
2011-06-30	241
2011-09-30	273
2011-12-31	284
2012-03-31	297
2012-06-30	262
2012-09-30	226
2014-03-31	232
2014-06-30	236
2014-09-30	256
2014-12-31	100
2015-03-31	239
2015-06-30	291
2015-09-30	286
2015-12-31	283
2016-03-31	286
2016-06-30	267
2016-09-30	261
2016-12-31	252
2017-03-31	338
2017-06-30	525
2017-09-30	594
2017-12-31	616
2018-03-31	601
2018-06-30	586
2018-09-30	574
2018-12-31	640
2019-03-31	622
2019-06-30	699
2019-09-30	665
2019-12-31	661
2020-03-31	608
2020-06-30	679
2020-09-30	713
2020-12-31	756
2021-03-31	825
2021-06-30	813
2021-09-30	881
2021-12-31	916
2022-03-31	887
2022-06-30	882
2022-09-30	882
2022-12-31	813
2023-03-31	870
2023-06-30	870
2023-09-30	887