Quarterly US dollars
1999-03-31 4116
1999-06-30 3758
1999-09-30 4378
1999-12-31 3909
2000-03-31 3990
2000-06-30 4633
2000-09-30 4416
2000-12-31 4627
2001-03-31 4422
2001-06-30 4078
2001-09-30 5129
2001-12-31 4782
2002-03-31 6017
2002-06-30 7006
2002-09-30 7563
2002-12-31 8353
2003-03-31 8468
2003-06-30 8330
2003-09-30 9192
2003-12-31 9371
2004-03-31 8893
2004-06-30 7776
2004-09-30 8161
2004-12-31 8935
2005-03-31 10778
2005-06-30 10022
2005-09-30 11143
2005-12-31 11581
2006-03-31 8323
2006-06-30 9041
2006-09-30 7395
2006-12-31 8078
2007-03-31 8350
2007-06-30 7673
2007-09-30 10506
2007-12-31 10168
2008-03-31 12436
2008-06-30 12510
2008-09-30 11171
2008-12-31 7902
2009-03-31 9948
2009-06-30 9131
2009-09-30 8588
2009-12-31 8245
2010-03-31 7178
2010-06-30 5735
2010-09-30 6817
2010-12-31 4991
2011-03-31 5843
2011-06-30 7267
2011-09-30 7442
2011-12-31 7293
2012-03-31 6638
2012-06-30 7443
2012-09-30 7606
2012-12-31 7518
2013-03-31 6479
2013-06-30 6033
2013-09-30 6042
2013-12-31 5775
2014-03-31 5684
2014-06-30 5751
2014-09-30 4885
2014-12-31 4968
2015-03-31 4451
2015-06-30 4068
2015-09-30 4138
2015-12-31 3961
2016-03-31 6415
2016-06-30 6320
2016-09-30 5571
2016-12-31 3986
2017-03-31 3530
2017-06-30 3346
2017-09-30 3017
2017-12-31 2806
2018-03-31 2762
2018-06-30 2632
2018-09-30 1926
2018-12-31 1583
2019-03-31 1748
2019-06-30 2047
2019-09-30 1881
2019-12-31 2208
2020-03-31 2357
2020-06-30 1875
2020-09-30 2083
2020-12-31 1510
2021-03-31 1155
2021-06-30 1149
2021-09-30 735
2021-12-31 1114
2022-03-31 775
2022-06-30 1377
2022-09-30 830
2022-12-31 1043
2023-03-31 977
2023-06-30 1085
2023-09-30 934