Quarterly US dollars
1999-03-31 101
1999-06-30 67
1999-09-30 142
1999-12-31 233
2000-03-31 173
2000-06-30 247
2000-09-30 122
2000-12-31 122
2001-03-31 156
2001-06-30 203
2001-09-30 426
2001-12-31 316
2002-03-31 372
2002-06-30 342
2002-09-30 928
2002-12-31 293
2003-03-31 573
2003-06-30 568
2003-09-30 356
2003-12-31 387
2004-03-31 843
2004-06-30 1442
2004-09-30 651
2004-12-31 910
2005-03-31 1782
2005-06-30 1261
2005-09-30 1239
2005-12-31 1353
2006-03-31 1821
2006-06-30 1522
2006-09-30 1672
2006-12-31 1432
2007-03-31 3096
2007-06-30 1613
2007-09-30 1693
2007-12-31 3186
2008-03-31 2697
2008-06-30 3570
2008-09-30 3569
2008-12-31 3163
2009-03-31 3989
2009-06-30 3166
2009-09-30 2572
2009-12-31 2572
2010-03-31 2590
2010-06-30 3161
2010-09-30 4551
2010-12-31 4899
2011-03-31 4195
2011-06-30 4734
2011-09-30 6666
2011-12-31 6809
2012-03-31 7756
2012-06-30 5538
2012-09-30 6405
2012-12-31 6076
2013-03-31 10056
2013-06-30 8061
2013-09-30 8492
2013-12-31 9094
2014-03-31 8673
2014-06-30 9024
2014-09-30 8198
2014-12-31 6411
2015-03-31 6157
2015-06-30 5578
2015-09-30 8166
2015-12-31 4920
2016-03-31 5914
2016-06-30 5412
2016-09-30 7302
2016-12-31 7600
2017-03-31 8675
2017-06-30 11201
2017-09-30 12106
2017-12-31 10568
2018-03-31 10795
2018-06-30 7901
2018-09-30 7930
2018-12-31 9611
2019-03-31 9232
2019-06-30 8810
2019-09-30 8716
2019-12-31 8506
2020-03-31 7688
2020-06-30 6878
2020-09-30 6188
2020-12-31 5530
2021-03-31 5814
2021-06-30 6020
2021-09-30 8814
2021-12-31 4633
2022-03-31 4502
2022-06-30 5053
2022-09-30 6215
2022-12-31 5415
2023-03-31 5176
2023-06-30 4874
2023-09-30 7702