Quarter	US dollars
2004-12-31	330
2005-03-31	318
2005-06-30	249
2005-09-30	249
2005-12-31	240
2006-03-31	213
2006-06-30	185
2006-09-30	228
2006-12-31	205
2007-03-31	369
2007-06-30	269
2007-09-30	257
2007-12-31	289
2008-03-31	372
2008-06-30	370
2008-09-30	365
2008-12-31	325
2009-03-31	294
2009-06-30	212
2009-09-30	208
2009-12-31	244
2010-03-31	278
2010-06-30	352
2010-09-30	263
2010-12-31	554
2011-03-31	473
2011-06-30	769
2011-09-30	1025
2011-12-31	618
2012-03-31	631
2012-06-30	637
2012-09-30	510
2012-12-31	634
2013-03-31	569
2013-06-30	708
2013-09-30	577
2013-12-31	593
2014-03-31	517
2014-06-30	520
2014-09-30	551
2014-12-31	585
2015-03-31	656
2015-06-30	793
2015-09-30	641
2015-12-31	563
2016-03-31	476
2016-06-30	457
2016-09-30	479
2016-12-31	413
2017-03-31	245
2017-06-30	284
2017-09-30	397
2017-12-31	503
2018-03-31	536
2018-06-30	580
2018-09-30	501
2018-12-31	564
2019-03-31	326
2019-06-30	410
2019-09-30	436
2019-12-31	441
2020-03-31	478
2020-06-30	161
2020-09-30	195
2020-12-31	194
2021-03-31	47
2021-06-30	95
2021-09-30	160
2021-12-31	143
2022-03-31	130
2022-06-30	105
2022-09-30	327
2022-12-31	494
2023-03-31	210
2023-06-30	207
2023-09-30	180