Quarterly US dollars
1999-03-31 22967
1999-06-30 22231
1999-09-30 21844
1999-12-31 21100
2000-03-31 21761
2000-06-30 21502
2000-09-30 22685
2000-12-31 23247
2001-03-31 21740
2001-06-30 20377
2001-09-30 21698
2001-12-31 21419
2002-03-31 22408
2002-06-30 22558
2002-09-30 22570
2002-12-31 23961
2003-03-31 22835
2003-06-30 23193
2003-09-30 27358
2003-12-31 30226
2004-03-31 35242
2004-06-30 38381
2004-09-30 36520
2004-12-31 43170
2005-03-31 48110
2005-06-30 50321
2005-09-30 54609
2005-12-31 66971
2006-03-31 81326
2006-06-30 75959
2006-09-30 81597
2006-12-31 82591
2007-03-31 97814
2007-06-30 110260
2007-09-30 126531
2007-12-31 126736
2008-03-31 130965
2008-06-30 131669
2008-09-30 128240
2008-12-31 104945
2009-03-31 93715
2009-06-30 100383
2009-09-30 93663
2009-12-31 90427
2010-03-31 90979
2010-06-30 89263
2010-09-30 102544
2010-12-31 93174
2011-03-31 106388
2011-06-30 109675
2011-09-30 92818
2011-12-31 97292
2012-03-31 97415
2012-06-30 101253
2012-09-30 107716
2012-12-31 111068
2013-03-31 129756
2013-06-30 121262
2013-09-30 121859
2013-12-31 117090
2014-03-31 108251
2014-06-30 112364
2014-09-30 106651
2014-12-31 95290
2015-03-31 86129
2015-06-30 87268
2015-09-30 82888
2015-12-31 78998
2016-03-31 79372
2016-06-30 80918
2016-09-30 79461
2016-12-31 70886
2017-03-31 76399
2017-06-30 71839
2017-09-30 73176
2017-12-31 75864
2018-03-31 76843
2018-06-30 69778
2018-09-30 64169
2018-12-31 63765
2019-03-31 62403
2019-06-30 56390
2019-09-30 54244
2019-12-31 58491
2020-03-31 51486
2020-06-30 47311
2020-09-30 52197
2020-12-31 51484
2021-03-31 46003
2021-06-30 43263
2021-09-30 43498
2021-12-31 45159
2022-03-31 45940
2022-06-30 45438
2022-09-30 47600
2022-12-31 41798
2023-03-31 41823
2023-06-30 43811
2023-09-30 43746