Quarterly US dollars
1999-09-30 -3771
1999-12-31 -4256
2000-03-31 -5853
2000-06-30 -6676
2000-09-30 -5552
2000-12-31 -5893
2001-03-31 -5261
2001-06-30 -3866
2001-09-30 -4001
2001-12-31 -3769
2002-03-31 -4603
2002-06-30 -4680
2002-09-30 -5465
2002-12-31 -6421
2003-03-31 -5842
2003-06-30 -6666
2003-09-30 -6454
2003-12-31 -6617
2004-03-31 -7193
2004-06-30 -7213
2004-09-30 -8733
2004-12-31 -9970
2005-03-31 -12089
2005-06-30 -14991
2005-09-30 -14489
2005-12-31 -13177
2006-03-31 -11912
2006-06-30 -13367
2006-09-30 -15621
2006-12-31 -15613
2007-03-31 -13675
2007-06-30 -13656
2007-09-30 -17387
2007-12-31 -23640
2008-03-31 -25239
2008-06-30 -15490
2008-09-30 -10303
2008-12-31 -7174
2009-03-31 -10515
2009-06-30 -14592
2009-09-30 -11550
2009-12-31 -9343
2010-03-31 -14507
2010-06-30 -16559
2010-09-30 -15860
2010-12-31 -18512
2011-03-31 -14664
2011-06-30 -9468
2011-09-30 -16713
2011-12-31 -15761
2012-03-31 -14122
2012-06-30 -16907
2012-09-30 -17637
2012-12-31 -20259
2013-03-31 -15253
2013-06-30 -15629
2013-09-30 -16115
2013-12-31 -14558
2014-03-31 -16990
2014-06-30 -17761
2014-09-30 -15484
2014-12-31 -14618
2015-03-31 -13937
2015-06-30 -12872
2015-09-30 -12643
2015-12-31 -11685
2016-03-31 -11226
2016-06-30 -12332
2016-09-30 -16426
2016-12-31 -14786
2017-03-31 -12310
2017-06-30 -13454
2017-09-30 -16295
2017-12-31 -17239
2018-03-31 -17419
2018-06-30 -16182
2018-09-30 -11857
2018-12-31 -12557
2019-03-31 -11255
2019-06-30 -14834
2019-09-30 -17544
2019-12-31 -18582
2020-03-31 -17016
2020-06-30 -22476
2020-09-30 -27385
2020-12-31 -28545
2021-03-31 -27269
2021-06-30 -20268
2021-09-30 -20102
2021-12-31 -21535
2022-03-31 -19036
2022-06-30 -15442
2022-09-30 -8706
2022-12-31 -10000
2023-03-31 -10000
2023-06-30 -10494
2023-09-30 -9401
2023-12-31 -9877