Quarterly US dollars
1999-03-31 14327
1999-06-30 13354
1999-09-30 17534
1999-12-31 17907
2000-03-31 18550
2000-06-30 19003
2000-09-30 19859
2000-12-31 22067
2001-03-31 22901
2001-06-30 22471
2001-09-30 22739
2001-12-31 23792
2002-03-31 25774
2002-06-30 28878
2002-09-30 31861
2002-12-31 33972
2003-03-31 35688
2003-06-30 44183
2003-09-30 47921
2003-12-31 58761
2004-03-31 65606
2004-06-30 67274
2004-09-30 61257
2004-12-31 71733
2005-03-31 74660
2005-06-30 72291
2005-09-30 87017
2005-12-31 97204
2006-03-31 89254
2006-06-30 94553
2006-09-30 103233
2006-12-31 118963
2007-03-31 126980
2007-06-30 133525
2007-09-30 131745
2007-12-31 153320
2008-03-31 182933
2008-06-30 187489
2008-09-30 178683
2008-12-31 156556
2009-03-31 163107
2009-06-30 178481
2009-09-30 170893
2009-12-31 168564
2010-03-31 162544
2010-06-30 168570
2010-09-30 185669
2010-12-31 154034
2011-03-31 152894
2011-06-30 151252
2011-09-30 144424
2011-12-31 133076
2012-03-31 128121
2012-06-30 126141
2012-09-30 127369
2012-12-31 116063
2013-03-31 112008
2013-06-30 104645
2013-09-30 103917
2013-12-31 108514
2014-03-31 112292
2014-06-30 105065
2014-09-30 102617
2014-12-31 97283
2015-03-31 90969
2015-06-30 78284
2015-09-30 64812
2015-12-31 69989
2016-03-31 75897
2016-06-30 76454
2016-09-30 68011
2016-12-31 58244
2017-03-31 57102
2017-06-30 51270
2017-09-30 56976
2017-12-31 56890
2018-03-31 63634
2018-06-30 64285
2018-09-30 66397
2018-12-31 66102
2019-03-31 63055
2019-06-30 52458
2019-09-30 54328
2019-12-31 59095
2020-03-31 58128
2020-06-30 60745
2020-09-30 61995
2020-12-31 78084
2021-03-31 61943
2021-06-30 70829
2021-09-30 73634
2021-12-31 71474
2022-03-31 60175
2022-06-30 53131
2022-09-30 49301
2022-12-31 50197
2023-03-31 51071
2023-06-30 52344
2023-09-30 50022