Quarter	US dollars
1986-09-30	424
1986-12-31	476
1987-03-31	497
1987-06-30	561
1987-09-30	572
1987-12-31	622
1988-03-31	680
1988-06-30	677
1988-09-30	718
1988-12-31	732
1989-03-31	701
1989-06-30	723
1989-09-30	756
1989-12-31	715
1990-03-31	614
1990-06-30	702
1990-09-30	813
1990-12-31	763
1991-03-31	764
1991-06-30	621
1991-09-30	601
1991-12-31	664
1992-03-31	759
1992-06-30	849
1992-09-30	823
1992-12-31	795
1993-03-31	842
1993-06-30	811
1993-09-30	809
1993-12-31	809
1994-03-31	840
1994-06-30	872
1994-09-30	917
1994-12-31	872
1995-03-31	915
1995-06-30	934
1995-09-30	993
1995-12-31	1109
1996-03-31	1092
1996-06-30	1153
1996-09-30	1142
1996-12-31	1175
1997-03-31	1265
1997-06-30	1834
1997-09-30	3639
1997-12-31	3123
1998-03-31	3230
1998-06-30	2854
1998-09-30	2529
1998-12-31	2385
1999-03-31	2253
1999-06-30	1750
1999-09-30	1592
1999-12-31	2078
2000-03-31	2511
2000-06-30	2323
2000-09-30	2357
2000-12-31	2558
2001-03-31	2890
2001-06-30	2735
2001-09-30	2773
2001-12-31	2505
2002-03-31	2513
2002-06-30	2224
2002-09-30	2286
2002-12-31	2057
2003-03-31	1590
2003-06-30	1621
2003-09-30	1728
2003-12-31	2319
2004-03-31	1933
2004-06-30	2325
2004-09-30	2615
2004-12-31	2716
2005-03-31	3194
2005-06-30	3233
2005-09-30	4491
2005-12-31	5172
2006-03-31	5164
2006-06-30	7434
2006-09-30	7004
2006-12-31	6894
2007-03-31	6899
2007-06-30	9733
2007-09-30	10147
2007-12-31	9951
2008-03-31	13666
2008-06-30	18656
2008-09-30	12605
2008-12-31	8389
2009-03-31	7940
2009-06-30	7206
2009-09-30	6930
2009-12-31	10138
2010-03-31	10926
2010-06-30	8659
2010-09-30	9241
2010-12-31	7613
2011-03-31	7228
2011-06-30	7633
2011-09-30	6142
2011-12-31	6138
2012-03-31	6484
2012-06-30	5785
2012-09-30	11977
2012-12-31	12121
2013-03-31	12768
2013-06-30	9663
2013-09-30	8996
2013-12-31	7377
2014-03-31	7283
2014-06-30	7184
2014-09-30	6500
2014-12-31	7568
2015-03-31	7284
2015-06-30	8189
2015-09-30	7817
2015-12-31	7922
2016-03-31	8052
2016-06-30	8230
2016-09-30	7232
2016-12-31	6986
2017-03-31	6311
2017-06-30	6159
2017-09-30	6284
2017-12-31	6403
2018-03-31	6766
2018-06-30	6653
2018-09-30	7687
2018-12-31	6737
2019-03-31	7079
2019-06-30	6946
2019-09-30	5424
2019-12-31	5273
2020-03-31	5283
2020-06-30	3733
2020-09-30	3808
2020-12-31	3636
2021-03-31	3780
2021-06-30	3880
2021-09-30	3799
2021-12-31	3446
2022-03-31	3014
2022-06-30	2735
2022-09-30	2674
2022-12-31	2233
2023-03-31	1934
2023-06-30	1858
2023-09-30	1894