Quarter	US dollars
1986-09-30	730
1986-12-31	830
1987-03-31	684
1987-06-30	791
1987-09-30	914
1987-12-31	986
1988-03-31	894
1988-06-30	895
1988-09-30	840
1988-12-31	847
1989-03-31	872
1989-06-30	882
1989-09-30	1033
1989-12-31	1114
1990-03-31	991
1990-06-30	1043
1990-09-30	1026
1990-12-31	1384
1991-03-31	1195
1991-06-30	1068
1991-09-30	1112
1991-12-31	1299
1992-03-31	1162
1992-06-30	1192
1992-09-30	1269
1992-12-31	1191
1993-03-31	1031
1993-06-30	1021
1993-09-30	1046
1993-12-31	838
1994-03-31	714
1994-06-30	782
1994-09-30	815
1994-12-31	878
1995-03-31	852
1995-06-30	901
1995-09-30	814
1995-12-31	933
1996-03-31	969
1996-06-30	916
1996-09-30	945
1996-12-31	1170
1997-03-31	1268
1997-06-30	1476
1997-09-30	1465
1997-12-31	1758
1998-03-31	1604
1998-06-30	1255
1998-09-30	965
1998-12-31	1263
1999-03-31	1217
1999-06-30	1521
1999-09-30	1538
1999-12-31	1590
2000-03-31	1948
2000-06-30	1753
2000-09-30	2729
2000-12-31	2795
2001-03-31	2837
2001-06-30	3336
2001-09-30	3306
2001-12-31	2496
2002-03-31	2163
2002-06-30	2376
2002-09-30	2274
2002-12-31	2563
2003-03-31	2085
2003-06-30	1851
2003-09-30	1794
2003-12-31	2489
2004-03-31	1731
2004-06-30	1710
2004-09-30	1752
2004-12-31	2148
2005-03-31	2764
2005-06-30	2841
2005-09-30	3288
2005-12-31	3179
2006-03-31	4338
2006-06-30	4456
2006-09-30	4363
2006-12-31	4000
2007-03-31	4907
2007-06-30	5063
2007-09-30	4613
2007-12-31	4061
2008-03-31	4217
2008-06-30	3645
2008-09-30	4192
2008-12-31	2734
2009-03-31	1514
2009-06-30	1317
2009-09-30	1170
2009-12-31	1668
2010-03-31	1583
2010-06-30	1800
2010-09-30	2114
2010-12-31	1884
2011-03-31	2252
2011-06-30	2636
2011-09-30	3079
2011-12-31	2746
2012-03-31	3294
2012-06-30	3274
2012-09-30	3599
2012-12-31	3596
2013-03-31	3286
2013-06-30	2772
2013-09-30	3483
2013-12-31	3050
2014-03-31	2990
2014-06-30	2980
2014-09-30	2623
2014-12-31	2896
2015-03-31	3015
2015-06-30	1995
2015-09-30	2714
2015-12-31	2060
2016-03-31	2368
2016-06-30	2625
2016-09-30	2981
2016-12-31	3423
2017-03-31	4039
2017-06-30	2880
2017-09-30	3401
2017-12-31	2527
2018-03-31	4779
2018-06-30	4204
2018-09-30	3373
2018-12-31	3696
2019-03-31	3444
2019-06-30	2893
2019-09-30	3481
2019-12-31	4652
2020-03-31	4527
2020-06-30	6511
2020-09-30	5469
2020-12-31	6143
2021-03-31	7282
2021-06-30	5405
2021-09-30	6232
2021-12-31	4252
2022-03-31	4943
2022-06-30	4735
2022-09-30	4891
2022-12-31	5114
2023-03-31	5450
2023-06-30	5454
2023-09-30	5897