Quarterly US dollars
1999-09-30 10284
1999-12-31 6887
2000-03-31 7907
2000-06-30 8759
2000-09-30 7417
2000-12-31 8051
2001-03-31 8176
2001-06-30 7400
2001-09-30 8535
2001-12-31 9455
2002-03-31 10916
2002-06-30 12498
2002-09-30 13570
2002-12-31 14709
2003-03-31 16171
2003-06-30 17814
2003-09-30 16639
2003-12-31 19326
2004-03-31 19097
2004-06-30 20280
2004-09-30 21683
2004-12-31 21976
2005-03-31 21971
2005-06-30 20954
2005-09-30 20911
2005-12-31 20867
2006-03-31 22333
2006-06-30 21178
2006-09-30 20125
2006-12-31 20187
2007-03-31 19607
2007-06-30 20798
2007-09-30 18618
2007-12-31 14518
2008-03-31 12837
2008-06-30 10156
2008-09-30 6970
2008-12-31 5957
2009-03-31 7416
2009-06-30 7029
2009-09-30 6910
2009-12-31 6952
2010-03-31 7642
2010-06-30 6037
2010-09-30 6541
2010-12-31 6784
2011-03-31 8011
2011-06-30 7117
2011-09-30 7075
2011-12-31 7090
2012-03-31 7369
2012-06-30 6446
2012-09-30 6472
2012-12-31 6850
2013-03-31 6497
2013-06-30 6462
2013-09-30 11346
2013-12-31 11498
2014-03-31 12463
2014-06-30 11253
2014-09-30 10584
2014-12-31 10135
2015-03-31 9613
2015-06-30 9072
2015-09-30 11191
2015-12-31 10782
2016-03-31 11107
2016-06-30 12817
2016-09-30 11462
2016-12-31 11373
2017-03-31 10058
2017-06-30 10600
2017-09-30 11185
2017-12-31 12382
2018-03-31 10865
2018-06-30 9356
2018-09-30 8935
2018-12-31 9116
2019-03-31 7486
2019-06-30 7044
2019-09-30 6871
2019-12-31 10446
2020-03-31 6447
2020-06-30 16466
2020-09-30 17263
2020-12-31 20360
2021-03-31 18985
2021-06-30 15372
2021-09-30 15457
2021-12-31 19099
2022-03-31 15237
2022-06-30 12426
2022-09-30 9233
2022-12-31 15996
2023-03-31 12762
2023-06-30 7007
2023-09-30 6907
2023-12-31 8981