Quarterly US dollars
1999-03-31 33323
1999-06-30 26265
1999-09-30 26157
1999-12-31 31513
2000-03-31 28827
2000-06-30 36775
2000-09-30 39309
2000-12-31 27997
2001-03-31 41012
2001-06-30 37607
2001-09-30 43846
2001-12-31 23769
2002-03-31 24542
2002-06-30 22162
2002-09-30 15520
2002-12-31 25214
2003-03-31 22718
2003-06-30 26791
2003-09-30 25700
2003-12-31 35774
2004-03-31 38038
2004-06-30 31580
2004-09-30 25699
2004-12-31 36972
2005-03-31 33327
2005-06-30 45680
2005-09-30 33386
2005-12-31 45826
2006-03-31 38229
2006-06-30 62465
2006-09-30 53656
2006-12-31 70143
2007-03-31 68715
2007-06-30 76265
2007-09-30 95306
2007-12-31 93961
2008-03-31 102872
2008-06-30 87109
2008-09-30 101022
2008-12-31 69920
2009-03-31 133727
2009-06-30 90976
2009-09-30 116283
2009-12-31 120422
2010-03-31 105272
2010-06-30 96020
2010-09-30 116283
2010-12-31 115804
2011-03-31 122974
2011-06-30 129508
2011-09-30 108612
2011-12-31 134160
2012-03-31 127487
2012-06-30 121421
2012-09-30 111469
2012-12-31 118051
2013-03-31 104547
2013-06-30 109584
2013-09-30 118493
2013-12-31 136550
2014-03-31 143727
2014-06-30 167948
2014-09-30 177703
2014-12-31 136578
2015-03-31 123606
2015-06-30 120713
2015-09-30 107052
2015-12-31 96420
2016-03-31 114325
2016-06-30 147647
2016-09-30 156251
2016-12-31 134565
2017-03-31 154384
2017-06-30 139874
2017-09-30 138473
2017-12-31 134189
2018-03-31 145550
2018-06-30 133993
2018-09-30 131244
2018-12-31 97918
2019-03-31 108507
2019-06-30 104256
2019-09-30 101017
2019-12-31 87854
2020-03-31 109966
2020-06-30 77739
2020-09-30 66765
2020-12-31 72815
2021-03-31 83502
2021-06-30 71415
2021-09-30 92776
2021-12-31 88231
2022-03-31 98351
2022-06-30 76758
2022-09-30 80771
2022-12-31 79972
2023-03-31 94225
2023-06-30 87024
2023-09-30 55567