Quarter	US dollars
1986-09-30	887
1986-12-31	1082
1987-03-31	1067
1987-06-30	866
1987-09-30	1031
1987-12-31	958
1988-03-31	1212
1988-06-30	1356
1988-09-30	1678
1988-12-31	1477
1989-03-31	1512
1989-06-30	1690
1989-09-30	2119
1989-12-31	2094
1990-03-31	1958
1990-06-30	2029
1990-09-30	1832
1990-12-31	1689
1991-03-31	1475
1991-06-30	1243
1991-09-30	1604
1991-12-31	1656
1992-03-31	1500
1992-06-30	1669
1992-09-30	1443
1992-12-31	1825
1993-03-31	1751
1993-06-30	1381
1993-09-30	1431
1993-12-31	1689
1994-03-31	1511
1994-06-30	2224
1994-09-30	1641
1994-12-31	1770
1995-03-31	1761
1995-06-30	1968
1995-09-30	3319
1995-12-31	2293
1996-03-31	2267
1996-06-30	2343
1996-09-30	2494
1996-12-31	2587
1997-03-31	2437
1997-06-30	2685
1997-09-30	3190
1997-12-31	5363
1998-03-31	6755
1998-06-30	9000
1998-09-30	3567
1998-12-31	3621
1999-03-31	3201
1999-06-30	5025
1999-09-30	3773
1999-12-31	2918
2000-03-31	5924
2000-06-30	4086
2000-09-30	6039
2000-12-31	4240
2001-03-31	5151
2001-06-30	4499
2001-09-30	5245
2001-12-31	4398
2002-03-31	2919
2002-06-30	3022
2002-09-30	2860
2002-12-31	4229
2003-03-31	2388
2003-06-30	3259
2003-09-30	3017
2003-12-31	6085
2004-03-31	6327
2004-06-30	9496
2004-09-30	8054
2004-12-31	5309
2005-03-31	6690
2005-06-30	7645
2005-09-30	8593
2005-12-31	9203
2006-03-31	6775
2006-06-30	7641
2006-09-30	10374
2006-12-31	5626
2007-03-31	9511
2007-06-30	6924
2007-09-30	8587
2007-12-31	12056
2008-03-31	7787
2008-06-30	7553
2008-09-30	8580
2008-12-31	9107
2009-03-31	7210
2009-06-30	9555
2009-09-30	10947
2009-12-31	3571
2010-03-31	4672
2010-06-30	10015
2010-09-30	4393
2010-12-31	4501
2011-03-31	6308
2011-06-30	4429
2011-09-30	7117
2011-12-31	9378
2012-03-31	6109
2012-06-30	5323
2012-09-30	5223
2012-12-31	7275
2013-03-31	4641
2013-06-30	4484
2013-09-30	5595
2013-12-31	6098
2014-03-31	4475
2014-06-30	5209
2014-09-30	7025
2014-12-31	6456
2015-03-31	5823
2015-06-30	10275
2015-09-30	9679
2015-12-31	9637
2016-03-31	7173
2016-06-30	8235
2016-09-30	9057
2016-12-31	6137
2017-03-31	9533
2017-06-30	6355
2017-09-30	6800
2017-12-31	5469
2018-03-31	11314
2018-06-30	7432
2018-09-30	6740
2018-12-31	6801
2019-03-31	7731
2019-06-30	6544
2019-09-30	6897
2019-12-31	6977
2020-03-31	9619
2020-06-30	8656
2020-09-30	9049
2020-12-31	10119
2021-03-31	12545
2021-06-30	11060
2021-09-30	12189
2021-12-31	13662
2022-03-31	14458
2022-06-30	12581
2022-09-30	13075
2022-12-31	16685
2023-03-31	14627
2023-06-30	12966
2023-09-30	11589