Quarterly US dollars
1999-03-31 14194
1999-06-30 15683
1999-09-30 16955
1999-12-31 16034
2000-03-31 18959
2000-06-30 21884
2000-09-30 26421
2000-12-31 22552
2001-03-31 24227
2001-06-30 27144
2001-09-30 24013
2001-12-31 25615
2002-03-31 25400
2002-06-30 28687
2002-09-30 29635
2002-12-31 32612
2003-03-31 32787
2003-06-30 32973
2003-09-30 33720
2003-12-31 40676
2004-03-31 44773
2004-06-30 51664
2004-09-30 56073
2004-12-31 59939
2005-03-31 76497
2005-06-30 88260
2005-09-30 91349
2005-12-31 105701
2006-03-31 122221
2006-06-30 137028
2006-09-30 147512
2006-12-31 141490
2007-03-31 164117
2007-06-30 144084
2007-09-30 174471
2007-12-31 164635
2008-03-31 145328
2008-06-30 155308
2008-09-30 169932
2008-12-31 59538
2009-03-31 65837
2009-06-30 57239
2009-09-30 59673
2009-12-31 49618
2010-03-31 58789
2010-06-30 47035
2010-09-30 55985
2010-12-31 54584
2011-03-31 69956
2011-06-30 62297
2011-09-30 58417
2011-12-31 57451
2012-03-31 59057
2012-06-30 60221
2012-09-30 65626
2012-12-31 52141
2013-03-31 68339
2013-06-30 65714
2013-09-30 57659
2013-12-31 59095
2014-03-31 61175
2014-06-30 56729
2014-09-30 49369
2014-12-31 40417
2015-03-31 49496
2015-06-30 49446
2015-09-30 54971
2015-12-31 45019
2016-03-31 40146
2016-06-30 51707
2016-09-30 50226
2016-12-31 45907
2017-03-31 52722
2017-06-30 48502
2017-09-30 41748
2017-12-31 40672
2018-03-31 48700
2018-06-30 40370
2018-09-30 47800
2018-12-31 51465
2019-03-31 56664
2019-06-30 57382
2019-09-30 49813
2019-12-31 53880
2020-03-31 53791
2020-06-30 42710
2020-09-30 43036
2020-12-31 44488
2021-03-31 34060
2021-06-30 39210
2021-09-30 37588
2021-12-31 35468
2022-03-31 33135
2022-06-30 35046
2022-09-30 38100
2022-12-31 32303
2023-03-31 32501
2023-06-30 35669
2023-09-30 37285