Quarter	US dollars
2004-12-31	332
2005-03-31	291
2005-06-30	308
2005-09-30	366
2005-12-31	412
2006-03-31	390
2006-06-30	148
2006-09-30	146
2006-12-31	274
2007-03-31	102
2007-06-30	104
2007-09-30	175
2007-12-31	106
2008-03-31	117
2008-06-30	133
2008-09-30	98
2008-12-31	108
2009-03-31	236
2009-06-30	367
2009-09-30	379
2009-12-31	507
2010-03-31	584
2010-06-30	521
2010-09-30	520
2010-12-31	459
2011-03-31	497
2011-06-30	596
2011-09-30	360
2011-12-31	472
2012-03-31	273
2012-06-30	253
2012-09-30	331
2012-12-31	168
2013-03-31	100
2013-06-30	111
2013-09-30	118
2013-12-31	69
2014-03-31	82
2014-06-30	118
2014-09-30	216
2014-12-31	357
2015-03-31	588
2015-06-30	445
2015-09-30	438
2015-12-31	461
2016-03-31	395
2016-06-30	372
2016-09-30	275
2016-12-31	450
2017-03-31	454
2017-06-30	333
2017-09-30	219
2017-12-31	224
2018-03-31	125
2018-06-30	209
2018-09-30	279
2018-12-31	303
2019-03-31	288
2019-06-30	378
2019-09-30	493
2019-12-31	478
2020-03-31	454
2020-06-30	393
2020-09-30	17
2020-12-31	53
2021-03-31	73
2021-06-30	18
2021-09-30	23
2021-12-31	22
2022-03-31	49
2022-06-30	17
2022-09-30	25
2022-12-31	17
2023-03-31	46
2023-06-30	430
2023-09-30	450