Quarter	US dollars
1986-09-30	415
1986-12-31	431
1987-03-31	415
1987-06-30	264
1987-09-30	284
1987-12-31	314
1988-03-31	246
1988-06-30	322
1988-09-30	210
1988-12-31	263
1989-03-31	167
1989-06-30	202
1989-09-30	178
1989-12-31	190
1990-03-31	216
1990-06-30	198
1990-09-30	243
1990-12-31	222
1991-03-31	467
1991-06-30	424
1991-09-30	827
1991-12-31	1137
1992-03-31	1148
1992-06-30	1043
1992-09-30	1464
1992-12-31	916
1993-03-31	728
1993-06-30	750
1993-09-30	501
1993-12-31	452
1994-03-31	229
1994-06-30	279
1994-09-30	287
1994-12-31	313
1995-03-31	185
1995-06-30	782
1995-09-30	415
1995-12-31	644
1996-03-31	539
1996-06-30	529
1996-09-30	721
1996-12-31	688
1997-03-31	619
1997-06-30	736
1997-09-30	807
1997-12-31	887
1998-03-31	681
1998-06-30	750
1998-09-30	1293
1998-12-31	1342
1999-03-31	968
1999-06-30	1264
1999-09-30	1311
1999-12-31	1101
2000-03-31	991
2000-06-30	962
2000-09-30	1262
2000-12-31	1218
2001-03-31	718
2001-06-30	961
2001-09-30	772
2001-12-31	754
2002-03-31	1160
2002-06-30	1298
2002-09-30	1401
2002-12-31	1528
2003-03-31	1082
2003-06-30	1401
2003-09-30	1175
2003-12-31	1265
2004-03-31	1687
2004-06-30	1049
2004-09-30	967
2004-12-31	1968
2005-03-31	898
2005-06-30	876
2005-09-30	1555
2005-12-31	2229
2006-03-31	1651
2006-06-30	1224
2006-09-30	1340
2006-12-31	1829
2007-03-31	2505
2007-06-30	3547
2007-09-30	4129
2007-12-31	2530
2008-03-31	2859
2008-06-30	3303
2008-09-30	4366
2008-12-31	3111
2009-03-31	5156
2009-06-30	3308
2009-09-30	3556
2009-12-31	2754
2010-03-31	4717
2010-06-30	4772
2010-09-30	4615
2010-12-31	5311
2011-03-31	5857
2011-06-30	5402
2011-09-30	4551
2011-12-31	3729
2012-03-31	2254
2012-06-30	2826
2012-09-30	2299
2012-12-31	2061
2013-03-31	2312
2013-06-30	1520
2013-09-30	2188
2013-12-31	3123
2014-03-31	2524
2014-06-30	1562
2014-09-30	1784
2014-12-31	1308
2015-03-31	2677
2015-06-30	1999
2015-09-30	1882
2015-12-31	2030
2016-03-31	1676
2016-06-30	1276
2016-09-30	1493
2016-12-31	1447
2017-03-31	1814
2017-06-30	1659
2017-09-30	1778
2017-12-31	2148
2018-03-31	1993
2018-06-30	2080
2018-09-30	2114
2018-12-31	1900
2019-03-31	2805
2019-06-30	2664
2019-09-30	2283
2019-12-31	1922
2020-03-31	2176
2020-06-30	1772
2020-09-30	1890
2020-12-31	1491
2021-03-31	1569
2021-06-30	1812
2021-09-30	1550
2021-12-31	1370
2022-03-31	1675
2022-06-30	1440
2022-09-30	1392
2022-12-31	1398
2023-03-31	1751
2023-06-30	1687
2023-09-30	1559