Quarterly US dollars
1986-09-30 109
1986-12-31 88
1987-03-31 135
1987-06-30 152
1987-09-30 144
1987-12-31 149
1988-03-31 152
1988-06-30 163
1988-09-30 252
1988-12-31 259
1989-03-31 258
1989-06-30 247
1989-09-30 284
1989-12-31 366
1990-03-31 428
1990-06-30 453
1990-09-30 499
1990-12-31 567
1991-03-31 476
1991-06-30 502
1991-09-30 566
1991-12-31 611
1992-03-31 636
1992-06-30 720
1992-09-30 692
1992-12-31 621
1993-03-31 601
1993-06-30 356
1993-09-30 401
1993-12-31 356
1994-03-31 315
1994-06-30 359
1994-09-30 365
1994-12-31 318
1995-03-31 300
1995-06-30 273
1995-09-30 258
1995-12-31 381
1996-03-31 413
1996-06-30 365
1996-09-30 351
1996-12-31 391
1997-03-31 272
1997-06-30 406
1997-09-30 313
1997-12-31 394
1998-03-31 402
1998-06-30 423
1998-09-30 428
1998-12-31 515
1999-03-31 639
1999-06-30 641
1999-09-30 759
1999-12-31 704
2000-03-31 665
2000-06-30 693
2000-09-30 617
2000-12-31 712
2001-03-31 838
2001-06-30 851
2001-09-30 863
2001-12-31 828
2002-03-31 765
2002-06-30 906
2002-09-30 1073
2002-12-31 1169
2003-03-31 1219
2003-06-30 1180
2003-09-30 1212
2003-12-31 1338
2004-03-31 1483
2004-06-30 1528
2004-09-30 1512
2004-12-31 1492
2005-03-31 1662
2005-06-30 1566
2005-09-30 1475
2005-12-31 1392
2006-03-31 1851
2006-06-30 1853
2006-09-30 3972
2006-12-31 4195
2007-03-31 4365
2007-06-30 6887
2007-09-30 6932
2007-12-31 6589
2008-03-31 8814
2008-06-30 9388
2008-09-30 7337
2008-12-31 5920
2009-03-31 5073
2009-06-30 5164
2009-09-30 4995
2009-12-31 5626
2010-03-31 6618
2010-06-30 5368
2010-09-30 5710
2010-12-31 5537
2011-03-31 4747
2011-06-30 4307
2011-09-30 4126
2011-12-31 4869
2012-03-31 4871
2012-06-30 4603
2012-09-30 4938
2012-12-31 4778
2013-03-31 4647
2013-06-30 4680
2013-09-30 4229
2013-12-31 4873
2014-03-31 5659
2014-06-30 5153
2014-09-30 5201
2014-12-31 5524
2015-03-31 5081
2015-06-30 5156
2015-09-30 3733
2015-12-31 4965
2016-03-31 4948
2016-06-30 3555
2016-09-30 4266
2016-12-31 4076
2017-03-31 3714
2017-06-30 4257
2017-09-30 4574
2017-12-31 4336
2018-03-31 5415
2018-06-30 4031
2018-09-30 3575
2018-12-31 4378
2019-03-31 4041
2019-06-30 4372
2019-09-30 4268
2019-12-31 4005
2020-03-31 4288
2020-06-30 3755
2020-09-30 3939
2020-12-31 3676
2021-03-31 2883
2021-06-30 2773
2021-09-30 2749
2021-12-31 3394
2022-03-31 3765
2022-06-30 4441
2022-09-30 3283
2022-12-31 2931
2023-03-31 3457
2023-06-30 3736
2023-09-30 3953