Quarterly US dollars
1999-03-31 20108
1999-06-30 18412
1999-09-30 16693
1999-12-31 17458
2000-03-31 15475
2000-06-30 17754
2000-09-30 19008
2000-12-31 18961
2001-03-31 18480
2001-06-30 16504
2001-09-30 17677
2001-12-31 15602
2002-03-31 12249
2002-06-30 13497
2002-09-30 13486
2002-12-31 14802
2003-03-31 18355
2003-06-30 19582
2003-09-30 19484
2003-12-31 17359
2004-03-31 18550
2004-06-30 20843
2004-09-30 21575
2004-12-31 21210
2005-03-31 17335
2005-06-30 18929
2005-09-30 16551
2005-12-31 14899
2006-03-31 20674
2006-06-30 17711
2006-09-30 22480
2006-12-31 18871
2007-03-31 15525
2007-06-30 21733
2007-09-30 27121
2007-12-31 25207
2008-03-31 34589
2008-06-30 36210
2008-09-30 29289
2008-12-31 23010
2009-03-31 23317
2009-06-30 20161
2009-09-30 23520
2009-12-31 23533
2010-03-31 26313
2010-06-30 31368
2010-09-30 29372
2010-12-31 36834
2011-03-31 36565
2011-06-30 46467
2011-09-30 42962
2011-12-31 37804
2012-03-31 37158
2012-06-30 40818
2012-09-30 32773
2012-12-31 36732
2013-03-31 34983
2013-06-30 33870
2013-09-30 43409
2013-12-31 48306
2014-03-31 55679
2014-06-30 64724
2014-09-30 51782
2014-12-31 51963
2015-03-31 50338
2015-06-30 43351
2015-09-30 34311
2015-12-31 34228
2016-03-31 32465
2016-06-30 33935
2016-09-30 40016
2016-12-31 43896
2017-03-31 40578
2017-06-30 43833
2017-09-30 44906
2017-12-31 41553
2018-03-31 37377
2018-06-30 41981
2018-09-30 41528
2018-12-31 39547
2019-03-31 36157
2019-06-30 35664
2019-09-30 36729
2019-12-31 36315
2020-03-31 45004
2020-06-30 32320
2020-09-30 35417
2020-12-31 37196
2021-03-31 46050
2021-06-30 43686
2021-09-30 47698
2021-12-31 39208
2022-03-31 42932
2022-06-30 44704
2022-09-30 56614
2022-12-31 41447
2023-03-31 50983
2023-06-30 52160
2023-09-30 51790