Quarter	US dollars
1999-09-30	16
1999-12-31	11
2000-03-31	16
2000-06-30	15
2000-09-30	16
2000-12-31	13
2001-03-31	13
2001-06-30	24
2001-09-30	19
2001-12-31	19
2002-03-31	21
2002-06-30	20
2002-09-30	20
2002-12-31	21
2003-03-31	21
2003-06-30	26
2003-09-30	30
2003-12-31	29
2004-03-31	33
2004-06-30	38
2004-09-30	40
2004-12-31	44
2005-03-31	47
2005-06-30	70
2005-09-30	81
2005-12-31	86
2006-03-31	95
2006-06-30	107
2006-09-30	136
2006-12-31	157
2007-03-31	186
2007-06-30	197
2007-09-30	210
2007-12-31	279
2008-03-31	286
2008-06-30	291
2008-09-30	312
2008-12-31	315
2009-03-31	288
2009-06-30	298
2009-09-30	253
2009-12-31	249
2010-03-31	246
2010-06-30	275
2010-09-30	328
2010-12-31	377
2011-03-31	386
2011-06-30	448
2011-09-30	489
2011-12-31	456
2012-03-31	462
2012-06-30	463
2012-09-30	505
2012-12-31	504
2013-03-31	512
2013-06-30	516
2013-09-30	526
2013-12-31	569
2014-03-31	577
2014-06-30	602
2014-09-30	674
2014-12-31	677
2015-03-31	676
2015-06-30	657
2015-09-30	654
2015-12-31	677
2016-03-31	637
2016-06-30	628
2016-09-30	674
2016-12-31	600
2017-03-31	618
2017-06-30	612
2017-09-30	624
2017-12-31	570
2018-03-31	568
2018-06-30	498
2018-09-30	539
2018-12-31	499
2019-03-31	523
2019-06-30	499
2019-09-30	520
2019-12-31	536
2020-03-31	563
2020-06-30	572
2020-09-30	598
2020-12-31	577
2021-03-31	581
2021-06-30	601
2021-09-30	650
2021-12-31	643
2022-03-31	670
2022-06-30	777
2022-09-30	731
2022-12-31	765
2023-03-31	808
2023-06-30	816
2023-09-30	805