Quarterly US dollars
1999-03-31 3456
1999-06-30 3374
1999-09-30 4196
1999-12-31 3203
2000-03-31 4821
2000-06-30 6680
2000-09-30 5420
2000-12-31 3091
2001-03-31 3811
2001-06-30 4863
2001-09-30 6957
2001-12-31 5845
2002-03-31 5196
2002-06-30 4856
2002-09-30 2467
2002-12-31 3914
2003-03-31 5123
2003-06-30 7025
2003-09-30 8533
2003-12-31 6384
2004-03-31 7000
2004-06-30 11779
2004-09-30 12611
2004-12-31 9032
2005-03-31 10926
2005-06-30 10010
2005-09-30 6480
2005-12-31 5820
2006-03-31 7265
2006-06-30 9195
2006-09-30 8277
2006-12-31 7892
2007-03-31 7301
2007-06-30 9435
2007-09-30 8024
2007-12-31 9344
2008-03-31 8054
2008-06-30 11456
2008-09-30 10645
2008-12-31 11935
2009-03-31 17418
2009-06-30 24038
2009-09-30 23718
2009-12-31 24777
2010-03-31 9772
2010-06-30 6630
2010-09-30 7610
2010-12-31 6442
2011-03-31 6948
2011-06-30 8058
2011-09-30 14064
2011-12-31 12240
2012-03-31 9435
2012-06-30 8830
2012-09-30 10374
2012-12-31 10601
2013-03-31 9896
2013-06-30 12125
2013-09-30 12238
2013-12-31 10530
2014-03-31 9685
2014-06-30 10889
2014-09-30 10231
2014-12-31 8712
2015-03-31 9914
2015-06-30 8831
2015-09-30 10018
2015-12-31 9840
2016-03-31 9326
2016-06-30 9984
2016-09-30 9273
2016-12-31 10042
2017-03-31 8877
2017-06-30 9584
2017-09-30 10661
2017-12-31 10765
2018-03-31 11346
2018-06-30 14223
2018-09-30 12777
2018-12-31 9034
2019-03-31 10261
2019-06-30 9945
2019-09-30 9709
2019-12-31 15688
2020-03-31 15263
2020-06-30 17533
2020-09-30 12019
2020-12-31 11619
2021-03-31 11578
2021-06-30 11013
2021-09-30 9665
2021-12-31 13518
2022-03-31 12897
2022-06-30 8767
2022-09-30 8689
2022-12-31 9772
2023-03-31 7038
2023-06-30 6580
2023-09-30 7182