Quarterly US dollars
1999-09-30 6386
1999-12-31 5964
2000-03-31 5234
2000-06-30 5215
2000-09-30 4511
2000-12-31 4273
2001-03-31 3621
2001-06-30 3619
2001-09-30 3540
2001-12-31 3158
2002-03-31 3047
2002-06-30 3216
2002-09-30 3267
2002-12-31 3459
2003-03-31 3377
2003-06-30 3485
2003-09-30 3908
2003-12-31 4202
2004-03-31 4263
2004-06-30 3977
2004-09-30 4176
2004-12-31 4397
2005-03-31 4281
2005-06-30 4376
2005-09-30 4735
2005-12-31 5126
2006-03-31 5806
2006-06-30 6120
2006-09-30 5978
2006-12-31 6341
2007-03-31 6601
2007-06-30 6489
2007-09-30 7412
2007-12-31 8344
2008-03-31 9312
2008-06-30 9279
2008-09-30 8823
2008-12-31 8628
2009-03-31 9142
2009-06-30 9322
2009-09-30 9933
2009-12-31 11012
2010-03-31 11127
2010-06-30 12409
2010-09-30 13037
2010-12-31 14067
2011-03-31 14354
2011-06-30 15018
2011-09-30 16160
2011-12-31 15272
2012-03-31 16584
2012-06-30 15945
2012-09-30 17716
2012-12-31 16534
2013-03-31 15943
2013-06-30 11890
2013-09-30 13232
2013-12-31 12015
2014-03-31 12886
2014-06-30 13117
2014-09-30 12135
2014-12-31 12030
2015-03-31 11842
2015-06-30 11679
2015-09-30 11124
2015-12-31 10594
2016-03-31 12333
2016-06-30 13170
2016-09-30 13197
2016-12-31 11544
2017-03-31 12420
2017-06-30 12393
2017-09-30 12800
2017-12-31 12879
2018-03-31 13207
2018-06-30 12485
2018-09-30 11879
2018-12-31 12809
2019-03-31 12926
2019-06-30 14086
2019-09-30 14776
2019-12-31 15193
2020-03-31 16042
2020-06-30 17775
2020-09-30 18860
2020-12-31 18941
2021-03-31 17003
2021-06-30 17618
2021-09-30 17533
2021-12-31 18176
2022-03-31 19349
2022-06-30 18049
2022-09-30 16699
2022-12-31 18139
2023-03-31 19721
2023-06-30 19108
2023-09-30 18564
2023-12-31 20599