Quarterly US dollars
1999-03-31 632
1999-06-30 858
1999-09-30 1153
1999-12-31 1627
2000-03-31 1239
2000-06-30 864
2000-09-30 1031
2000-12-31 293
2001-03-31 217
2001-06-30 920
2001-09-30 972
2001-12-31 472
2002-03-31 871
2002-06-30 767
2002-09-30 1149
2002-12-31 898
2003-03-31 1484
2003-06-30 2674
2003-09-30 4496
2003-12-31 5538
2004-03-31 9095
2004-06-30 12075
2004-09-30 17148
2004-12-31 16700
2005-03-31 16128
2005-06-30 13707
2005-09-30 18031
2005-12-31 15170
2006-03-31 18194
2006-06-30 16981
2006-09-30 19646
2006-12-31 10017
2007-03-31 15427
2007-06-30 25409
2007-09-30 9880
2007-12-31 11668
2008-03-31 11217
2008-06-30 10900
2008-09-30 5176
2008-12-31 2765
2009-03-31 2747
2009-06-30 6151
2009-09-30 4942
2009-12-31 6346
2010-03-31 7609
2010-06-30 13657
2010-09-30 11909
2010-12-31 13250
2011-03-31 16323
2011-06-30 19060
2011-09-30 18575
2011-12-31 12231
2012-03-31 8706
2012-06-30 9428
2012-09-30 10788
2012-12-31 12789
2013-03-31 15076
2013-06-30 19896
2013-09-30 18197
2013-12-31 19639
2014-03-31 20674
2014-06-30 18534
2014-09-30 17475
2014-12-31 13629
2015-03-31 12579
2015-06-30 9126
2015-09-30 7303
2015-12-31 6135
2016-03-31 5207
2016-06-30 5836
2016-09-30 6825
2016-12-31 5452
2017-03-31 6877
2017-06-30 7886
2017-09-30 8756
2017-12-31 8233
2018-03-31 8709
2018-06-30 9034
2018-09-30 9058
2018-12-31 10136
2019-03-31 9925
2019-06-30 7932
2019-09-30 7893
2019-12-31 9588
2020-03-31 9248
2020-06-30 8100
2020-09-30 6221
2020-12-31 5604
2021-03-31 7619
2021-06-30 7006
2021-09-30 6157
2021-12-31 8175
2022-03-31 9274
2022-06-30 10457
2022-09-30 11387
2022-12-31 8201
2023-03-31 8735
2023-06-30 8748
2023-09-30 9221