Quarterly US dollars
1999-03-31 5827
1999-06-30 7807
1999-09-30 7949
1999-12-31 8453
2000-03-31 12356
2000-06-30 10528
2000-09-30 10063
2000-12-31 8491
2001-03-31 9575
2001-06-30 10059
2001-09-30 11409
2001-12-31 9551
2002-03-31 14700
2002-06-30 12709
2002-09-30 15040
2002-12-31 9012
2003-03-31 16287
2003-06-30 16130
2003-09-30 17908
2003-12-31 16960
2004-03-31 19686
2004-06-30 25477
2004-09-30 25004
2004-12-31 19308
2005-03-31 24248
2005-06-30 23071
2005-09-30 26135
2005-12-31 19531
2006-03-31 21477
2006-06-30 19917
2006-09-30 16737
2006-12-31 19305
2007-03-31 19585
2007-06-30 21032
2007-09-30 25901
2007-12-31 20957
2008-03-31 21404
2008-06-30 19717
2008-09-30 24729
2008-12-31 17048
2009-03-31 20522
2009-06-30 19603
2009-09-30 16463
2009-12-31 17651
2010-03-31 17870
2010-06-30 17605
2010-09-30 15979
2010-12-31 15001
2011-03-31 17387
2011-06-30 14143
2011-09-30 23594
2011-12-31 15871
2012-03-31 20580
2012-06-30 19210
2012-09-30 21778
2012-12-31 21586
2013-03-31 19300
2013-06-30 22335
2013-09-30 21302
2013-12-31 18076
2014-03-31 130
2014-06-30 1
2014-09-30 383
2014-12-31 825
2015-03-31 870
2015-06-30 733
2015-09-30 793
2015-12-31 846
2016-03-31 772
2016-06-30 361
2016-09-30 347
2016-12-31 24
2017-03-31 32
2017-06-30 36
2017-09-30 39
2017-12-31 40
2018-03-31 749
2018-06-30 732
2018-09-30 1
2018-12-31 13
2019-03-31 6
2019-06-30 7
2019-09-30 185
2019-12-31 0
2020-03-31 4140
2020-06-30 3145
2020-09-30 12804
2020-12-31 6675
2021-03-31 7400
2021-06-30 7362
2021-09-30 8441
2021-12-31 7742
2022-03-31 7396
2022-06-30 7388
2022-09-30 7671
2022-12-31 6714
2023-03-31 6535
2023-06-30 7144
2023-09-30 5904