Quarterly US dollars
1999-03-31 39436
1999-06-30 38929
1999-09-30 38550
1999-12-31 37849
2000-03-31 35848
2000-06-30 35896
2000-09-30 35247
2000-12-31 36766
2001-03-31 35636
2001-06-30 35362
2001-09-30 35400
2001-12-31 33964
2002-03-31 33896
2002-06-30 37102
2002-09-30 35759
2002-12-31 37720
2003-03-31 39142
2003-06-30 38414
2003-09-30 39978
2003-12-31 42309
2004-03-31 44073
2004-06-30 43762
2004-09-30 47527
2004-12-31 52373
2005-03-31 50027
2005-06-30 51580
2005-09-30 53153
2005-12-31 59139
2006-03-31 66226
2006-06-30 64772
2006-09-30 70074
2006-12-31 75715
2007-03-31 76408
2007-06-30 89572
2007-09-30 96864
2007-12-31 118892
2008-03-31 128368
2008-06-30 127457
2008-09-30 130327
2008-12-31 130944
2009-03-31 122302
2009-06-30 121425
2009-09-30 119131
2009-12-31 116489
2010-03-31 119553
2010-06-30 123903
2010-09-30 122133
2010-12-31 127446
2011-03-31 128246
2011-06-30 127115
2011-09-30 122663
2011-12-31 126657
2012-03-31 130475
2012-06-30 126976
2012-09-30 134280
2012-12-31 136731
2013-03-31 128682
2013-06-30 124032
2013-09-30 131181
2013-12-31 121695
2014-03-31 140141
2014-06-30 134821
2014-09-30 141973
2014-12-31 146214
2015-03-31 146719
2015-06-30 155656
2015-09-30 157660
2015-12-31 169553
2016-03-31 159547
2016-06-30 164784
2016-09-30 168147
2016-12-31 166529
2017-03-31 169137
2017-06-30 166331
2017-09-30 174766
2017-12-31 188585
2018-03-31 205118
2018-06-30 194932
2018-09-30 193505
2018-12-31 196376
2019-03-31 210416
2019-06-30 219172
2019-09-30 215756
2019-12-31 229831
2020-03-31 220450
2020-06-30 213948
2020-09-30 218599
2020-12-31 232711
2021-03-31 232186
2021-06-30 230233
2021-09-30 223633
2021-12-31 232708
2022-03-31 231135
2022-06-30 227794
2022-09-30 223916
2022-12-31 223906
2023-03-31 216984
2023-06-30 219335
2023-09-30 215405