Quarterly US dollars
1999-03-31 9334
1999-06-30 9067
1999-09-30 9239
1999-12-31 8850
2000-03-31 8762
2000-06-30 10870
2000-09-30 10798
2000-12-31 10006
2001-03-31 9105
2001-06-30 8520
2001-09-30 12585
2001-12-31 9456
2002-03-31 11577
2002-06-30 13345
2002-09-30 12180
2002-12-31 12014
2003-03-31 13353
2003-06-30 12206
2003-09-30 11626
2003-12-31 12767
2004-03-31 11979
2004-06-30 14332
2004-09-30 15788
2004-12-31 17054
2005-03-31 15790
2005-06-30 15099
2005-09-30 15306
2005-12-31 17911
2006-03-31 18921
2006-06-30 18446
2006-09-30 19304
2006-12-31 17592
2007-03-31 15203
2007-06-30 20458
2007-09-30 22735
2007-12-31 26429
2008-03-31 25383
2008-06-30 30586
2008-09-30 26318
2008-12-31 27701
2009-03-31 24009
2009-06-30 24508
2009-09-30 22503
2009-12-31 20238
2010-03-31 26099
2010-06-30 22701
2010-09-30 18716
2010-12-31 21193
2011-03-31 25871
2011-06-30 24364
2011-09-30 23422
2011-12-31 23015
2012-03-31 21041
2012-06-30 20505
2012-09-30 20389
2012-12-31 8514
2013-03-31 11516
2013-06-30 11610
2013-09-30 11105
2013-12-31 11622
2014-03-31 13769
2014-06-30 12916
2014-09-30 12160
2014-12-31 12950
2015-03-31 12583
2015-06-30 11633
2015-09-30 6412
2015-12-31 5523
2016-03-31 4823
2016-06-30 5197
2016-09-30 5152
2016-12-31 5043
2017-03-31 5170
2017-06-30 5649
2017-09-30 6301
2017-12-31 5724
2018-03-31 5417
2018-06-30 5156
2018-09-30 5402
2018-12-31 5450
2019-03-31 6784
2019-06-30 7105
2019-09-30 5964
2019-12-31 5944
2020-03-31 7633
2020-06-30 7414
2020-09-30 7235
2020-12-31 5649
2021-03-31 6480
2021-06-30 5571
2021-09-30 6049
2021-12-31 5500
2022-03-31 5882
2022-06-30 5656
2022-09-30 4575
2022-12-31 6017
2023-03-31 5190
2023-06-30 6777
2023-09-30 6748