Quarterly US dollars
1999-03-31 28220
1999-06-30 26554
1999-09-30 26550
1999-12-31 27042
2000-03-31 27708
2000-06-30 25380
2000-09-30 24460
2000-12-31 24630
2001-03-31 24534
2001-06-30 23530
2001-09-30 22991
2001-12-31 23851
2002-03-31 23586
2002-06-30 23297
2002-09-30 21334
2002-12-31 22650
2003-03-31 20211
2003-06-30 19576
2003-09-30 21119
2003-12-31 19160
2004-03-31 23964
2004-06-30 19493
2004-09-30 18984
2004-12-31 20046
2005-03-31 18242
2005-06-30 19351
2005-09-30 21866
2005-12-31 21871
2006-03-31 27816
2006-06-30 29145
2006-09-30 34596
2006-12-31 30954
2007-03-31 32885
2007-06-30 39119
2007-09-30 36378
2007-12-31 35929
2008-03-31 37958
2008-06-30 40130
2008-09-30 37754
2008-12-31 25618
2009-03-31 27151
2009-06-30 27981
2009-09-30 28624
2009-12-31 29637
2010-03-31 31700
2010-06-30 30975
2010-09-30 40160
2010-12-31 41332
2011-03-31 43773
2011-06-30 48457
2011-09-30 43529
2011-12-31 46659
2012-03-31 55588
2012-06-30 47056
2012-09-30 45864
2012-12-31 47258
2013-03-31 47890
2013-06-30 44589
2013-09-30 51089
2013-12-31 53410
2014-03-31 45474
2014-06-30 44685
2014-09-30 42553
2014-12-31 42646
2015-03-31 43822
2015-06-30 44069
2015-09-30 42070
2015-12-31 42780
2016-03-31 30181
2016-06-30 29130
2016-09-30 27456
2016-12-31 24370
2017-03-31 24861
2017-06-30 22466
2017-09-30 25310
2017-12-31 23757
2018-03-31 24158
2018-06-30 22539
2018-09-30 25502
2018-12-31 27436
2019-03-31 27518
2019-06-30 27582
2019-09-30 29298
2019-12-31 25809
2020-03-31 25437
2020-06-30 22136
2020-09-30 19779
2020-12-31 30694
2021-03-31 27845
2021-06-30 27518
2021-09-30 26479
2021-12-31 42299
2022-03-31 39659
2022-06-30 28803
2022-09-30 43585
2022-12-31 48195
2023-03-31 51408
2023-06-30 55584
2023-09-30 36737