Quarterly US dollars
1999-03-31 7864
1999-06-30 7008
1999-09-30 6627
1999-12-31 6617
2000-03-31 7990
2000-06-30 8432
2000-09-30 8617
2000-12-31 7803
2001-03-31 10766
2001-06-30 9883
2001-09-30 11705
2001-12-31 12066
2002-03-31 10718
2002-06-30 9353
2002-09-30 9598
2002-12-31 11122
2003-03-31 9403
2003-06-30 10484
2003-09-30 10068
2003-12-31 11127
2004-03-31 10214
2004-06-30 9288
2004-09-30 7960
2004-12-31 11110
2005-03-31 11165
2005-06-30 10713
2005-09-30 14272
2005-12-31 13737
2006-03-31 13353
2006-06-30 13469
2006-09-30 15481
2006-12-31 18635
2007-03-31 19780
2007-06-30 24995
2007-09-30 22489
2007-12-31 34663
2008-03-31 31281
2008-06-30 16387
2008-09-30 19240
2008-12-31 25242
2009-03-31 19909
2009-06-30 22231
2009-09-30 22271
2009-12-31 24826
2010-03-31 20472
2010-06-30 16066
2010-09-30 14567
2010-12-31 16805
2011-03-31 23198
2011-06-30 22452
2011-09-30 13528
2011-12-31 16675
2012-03-31 17468
2012-06-30 17957
2012-09-30 19929
2012-12-31 18365
2013-03-31 26811
2013-06-30 26061
2013-09-30 28978
2013-12-31 25272
2014-03-31 27149
2014-06-30 28582
2014-09-30 30560
2014-12-31 30441
2015-03-31 25404
2015-06-30 26988
2015-09-30 30206
2015-12-31 26903
2016-03-31 24773
2016-06-30 21554
2016-09-30 24985
2016-12-31 23724
2017-03-31 28333
2017-06-30 26596
2017-09-30 28522
2017-12-31 26236
2018-03-31 30192
2018-06-30 27458
2018-09-30 31047
2018-12-31 33175
2019-03-31 38634
2019-06-30 38149
2019-09-30 30969
2019-12-31 34265
2020-03-31 32832
2020-06-30 32130
2020-09-30 30606
2020-12-31 29022
2021-03-31 24075
2021-06-30 23669
2021-09-30 22783
2021-12-31 19425
2022-03-31 21428
2022-06-30 26917
2022-09-30 25740
2022-12-31 26662
2023-03-31 33552
2023-06-30 31945
2023-09-30 28658