Quarterly US dollars
1999-03-31 4642
1999-06-30 4909
1999-09-30 4892
1999-12-31 5150
2000-03-31 5405
2000-06-30 5363
2000-09-30 5532
2000-12-31 6054
2001-03-31 6234
2001-06-30 5779
2001-09-30 6085
2001-12-31 6252
2002-03-31 5827
2002-06-30 7213
2002-09-30 7533
2002-12-31 8640
2003-03-31 8353
2003-06-30 10827
2003-09-30 10413
2003-12-31 11489
2004-03-31 13042
2004-06-30 14349
2004-09-30 15119
2004-12-31 17424
2005-03-31 18909
2005-06-30 17204
2005-09-30 18675
2005-12-31 18056
2006-03-31 22427
2006-06-30 22042
2006-09-30 25256
2006-12-31 25172
2007-03-31 28097
2007-06-30 28600
2007-09-30 28146
2007-12-31 26248
2008-03-31 28774
2008-06-30 28513
2008-09-30 33815
2008-12-31 27119
2009-03-31 22340
2009-06-30 22529
2009-09-30 36271
2009-12-31 24121
2010-03-31 23200
2010-06-30 20726
2010-09-30 21779
2010-12-31 21966
2011-03-31 24075
2011-06-30 23298
2011-09-30 24262
2011-12-31 22424
2012-03-31 25129
2012-06-30 24910
2012-09-30 24398
2012-12-31 22407
2013-03-31 22503
2013-06-30 22613
2013-09-30 24928
2013-12-31 25295
2014-03-31 23671
2014-06-30 25361
2014-09-30 23416
2014-12-31 21829
2015-03-31 21402
2015-06-30 22504
2015-09-30 23935
2015-12-31 24127
2016-03-31 24281
2016-06-30 24950
2016-09-30 22974
2016-12-31 20384
2017-03-31 20188
2017-06-30 21031
2017-09-30 21583
2017-12-31 24018
2018-03-31 25077
2018-06-30 23804
2018-09-30 23494
2018-12-31 23373
2019-03-31 22483
2019-06-30 22217
2019-09-30 23073
2019-12-31 23730
2020-03-31 23666
2020-06-30 20986
2020-09-30 21483
2020-12-31 22943
2021-03-31 22026
2021-06-30 24142
2021-09-30 23772
2021-12-31 22166
2022-03-31 19569
2022-06-30 16692
2022-09-30 15537
2022-12-31 16917
2023-03-31 15418
2023-06-30 15438
2023-09-30 14454