Quarterly US dollars
1999-03-31 13266
1999-06-30 14109
1999-09-30 10219
1999-12-31 20520
2000-03-31 9738
2000-06-30 10497
2000-09-30 10646
2000-12-31 10583
2001-03-31 8385
2001-06-30 9335
2001-09-30 9943
2001-12-31 20733
2002-03-31 9770
2002-06-30 10884
2002-09-30 14570
2002-12-31 13717
2003-03-31 13146
2003-06-30 20819
2003-09-30 16100
2003-12-31 18409
2004-03-31 31898
2004-06-30 23920
2004-09-30 35917
2004-12-31 23541
2005-03-31 13868
2005-06-30 36447
2005-09-30 24160
2005-12-31 28920
2006-03-31 37587
2006-06-30 14103
2006-09-30 32523
2006-12-31 32833
2007-03-31 57627
2007-06-30 48094
2007-09-30 32448
2007-12-31 39599
2008-03-31 91546
2008-06-30 47168
2008-09-30 48135
2008-12-31 76222
2009-03-31 109389
2009-06-30 71301
2009-09-30 24788
2009-12-31 24848
2010-03-31 20977
2010-06-30 21991
2010-09-30 23259
2010-12-31 21560
2011-03-31 23219
2011-06-30 25640
2011-09-30 250719
2011-12-31 245733
2012-03-31 197401
2012-06-30 16533
2012-09-30 15934
2012-12-31 17568
2013-03-31 17164
2013-06-30 13405
2013-09-30 13109
2013-12-31 15058
2014-03-31 15920
2014-06-30 18388
2014-09-30 19108
2014-12-31 19639
2015-03-31 21731
2015-06-30 19778
2015-09-30 18958
2015-12-31 17093
2016-03-31 18134
2016-06-30 17825
2016-09-30 18811
2016-12-31 16198
2017-03-31 18403
2017-06-30 16636
2017-09-30 17730
2017-12-31 19148
2018-03-31 19306
2018-06-30 20190
2018-09-30 19328
2018-12-31 17795
2019-03-31 16187
2019-06-30 16380
2019-09-30 14603
2019-12-31 14422
2020-03-31 13431
2020-06-30 12027
2020-09-30 11790
2020-12-31 11227
2021-03-31 13261
2021-06-30 13005
2021-09-30 11523
2021-12-31 11009
2022-03-31 11114
2022-06-30 11279
2022-09-30 12907
2022-12-31 6010
2023-03-31 6387
2023-06-30 5802
2023-09-30 6180