Quarter	US dollars
1986-09-30	5901
1986-12-31	4988
1987-03-31	4677
1987-06-30	5289
1987-09-30	5108
1987-12-31	6370
1988-03-31	6589
1988-06-30	6553
1988-09-30	6724
1988-12-31	7487
1989-03-31	7339
1989-06-30	7586
1989-09-30	8710
1989-12-31	9978
1990-03-31	10372
1990-06-30	11692
1990-09-30	13408
1990-12-31	13209
1991-03-31	11007
1991-06-30	10475
1991-09-30	10704
1991-12-31	11667
1992-03-31	9444
1992-06-30	11236
1992-09-30	9586
1992-12-31	8061
1993-03-31	7532
1993-06-30	8317
1993-09-30	8747
1993-12-31	8685
1994-03-31	9264
1994-06-30	10319
1994-09-30	10702
1994-12-31	10782
1995-03-31	11976
1995-06-30	12414
1995-09-30	11865
1995-12-31	12018
1996-03-31	10975
1996-06-30	11784
1996-09-30	15120
1996-12-31	13721
1997-03-31	12860
1997-06-30	12577
1997-09-30	11006
1997-12-31	13715
1998-03-31	16427
1998-06-30	16851
1998-09-30	17722
1998-12-31	15634
1999-03-31	8792
1999-06-30	9388
1999-09-30	10842
1999-12-31	10611
2000-03-31	11268
2000-06-30	10246
2000-09-30	7588
2000-12-31	11111
2001-03-31	6694
2001-06-30	11051
2001-09-30	11270
2001-12-31	11595
2002-03-31	12555
2002-06-30	13962
2002-09-30	15074
2002-12-31	16688
2003-03-31	15644
2003-06-30	17850
2003-09-30	17538
2003-12-31	19139
2004-03-31	19263
2004-06-30	19358
2004-09-30	19782
2004-12-31	22551
2005-03-31	24023
2005-06-30	27074
2005-09-30	27858
2005-12-31	27523
2006-03-31	27079
2006-06-30	30446
2006-09-30	30259
2006-12-31	39325
2007-03-31	44124
2007-06-30	45867
2007-09-30	49826
2007-12-31	61496
2008-03-31	60222
2008-06-30	52557
2008-09-30	39295
2008-12-31	55929
2009-03-31	38589
2009-06-30	30052
2009-09-30	24559
2009-12-31	24492
2010-03-31	29444
2010-06-30	44546
2010-09-30	45655
2010-12-31	50734
2011-03-31	51593
2011-06-30	48603
2011-09-30	52486
2011-12-31	48930
2012-03-31	45802
2012-06-30	51482
2012-09-30	61478
2012-12-31	64551
2013-03-31	65651
2013-06-30	66041
2013-09-30	75723
2013-12-31	78428
2014-03-31	84359
2014-06-30	82678
2014-09-30	69689
2014-12-31	72116
2015-03-31	68505
2015-06-30	70324
2015-09-30	69009
2015-12-31	61936