Quarter	US dollars
2004-12-31	252
2005-03-31	229
2005-06-30	253
2005-09-30	198
2005-12-31	232
2006-03-31	224
2006-06-30	259
2006-09-30	275
2006-12-31	260
2007-03-31	182
2007-06-30	209
2007-09-30	218
2007-12-31	277
2008-03-31	290
2008-06-30	283
2008-09-30	168
2008-12-31	223
2009-03-31	208
2009-06-30	352
2009-09-30	262
2009-12-31	265
2010-03-31	259
2010-06-30	266
2010-09-30	302
2010-12-31	384
2011-03-31	449
2011-06-30	541
2011-09-30	679
2011-12-31	676
2012-03-31	623
2012-06-30	634
2012-09-30	601
2012-12-31	574
2013-03-31	560
2013-06-30	560
2013-09-30	513
2013-12-31	511
2014-03-31	382
2014-06-30	333
2014-09-30	332
2014-12-31	298
2015-03-31	319
2015-06-30	307
2015-09-30	261
2015-12-31	279
2016-03-31	398
2016-06-30	410
2016-09-30	260
2016-12-31	261
2017-03-31	280
2017-06-30	287
2017-09-30	268
2017-12-31	270
2018-03-31	234
2018-06-30	331
2018-09-30	97
2018-12-31	103
2019-03-31	90
2019-06-30	64
2019-09-30	70
2019-12-31	57
2020-03-31	64
2020-06-30	70
2020-09-30	31
2020-12-31	31
2021-03-31	39
2021-06-30	35
2021-09-30	32
2021-12-31	23
2022-03-31	25
2022-06-30	34
2022-09-30	101
2022-12-31	25
2023-03-31	28
2023-06-30	60
2023-09-30	95