Quarterly US dollars
1999-03-31 16859
1999-06-30 16150
1999-09-30 18484
1999-12-31 16481
2000-03-31 18818
2000-06-30 19640
2000-09-30 19697
2000-12-31 20400
2001-03-31 20653
2001-06-30 21193
2001-09-30 23602
2001-12-31 20355
2002-03-31 15384
2002-06-30 14851
2002-09-30 13857
2002-12-31 14787
2003-03-31 17319
2003-06-30 17990
2003-09-30 20018
2003-12-31 20257
2004-03-31 19364
2004-06-30 18928
2004-09-30 19432
2004-12-31 21707
2005-03-31 25299
2005-06-30 20798
2005-09-30 23079
2005-12-31 23202
2006-03-31 24857
2006-06-30 24891
2006-09-30 30281
2006-12-31 27117
2007-03-31 25658
2007-06-30 30814
2007-09-30 28259
2007-12-31 28442
2008-03-31 27360
2008-06-30 29040
2008-09-30 30148
2008-12-31 20215
2009-03-31 16274
2009-06-30 17890
2009-09-30 18416
2009-12-31 17745
2010-03-31 18406
2010-06-30 21846
2010-09-30 27010
2010-12-31 25986
2011-03-31 25008
2011-06-30 25361
2011-09-30 22192
2011-12-31 20129
2012-03-31 21076
2012-06-30 16241
2012-09-30 15073
2012-12-31 16149
2013-03-31 16938
2013-06-30 21522
2013-09-30 26770
2013-12-31 25524
2014-03-31 23819
2014-06-30 24056
2014-09-30 26355
2014-12-31 29277
2015-03-31 28030
2015-06-30 30334
2015-09-30 30923
2015-12-31 36658
2016-03-31 23736
2016-06-30 24404
2016-09-30 23785
2016-12-31 24744
2017-03-31 25996
2017-06-30 21587
2017-09-30 20441
2017-12-31 18664
2018-03-31 20673
2018-06-30 23388
2018-09-30 23682
2018-12-31 23609
2019-03-31 21250
2019-06-30 20753
2019-09-30 26122
2019-12-31 23240
2020-03-31 28436
2020-06-30 25398
2020-09-30 24565
2020-12-31 31914
2021-03-31 31340
2021-06-30 30284
2021-09-30 31370
2021-12-31 43308
2022-03-31 40472
2022-06-30 25541
2022-09-30 43658
2022-12-31 44535
2023-03-31 49836
2023-06-30 47011
2023-09-30 29711