Quarter	US dollars
1986-09-30	187
1986-12-31	201
1987-03-31	199
1987-06-30	207
1987-09-30	206
1987-12-31	257
1988-03-31	263
1988-06-30	242
1988-09-30	241
1988-12-31	249
1989-03-31	219
1989-06-30	215
1989-09-30	217
1989-12-31	245
1990-03-31	248
1990-06-30	243
1990-09-30	229
1990-12-31	239
1991-03-31	207
1991-06-30	212
1991-09-30	208
1991-12-31	224
1992-03-31	175
1992-06-30	164
1992-09-30	154
1992-12-31	149
1993-03-31	144
1993-06-30	124
1993-09-30	121
1993-12-31	116
1994-03-31	106
1994-06-30	114
1994-09-30	109
1994-12-31	115
1995-03-31	114
1995-06-30	109
1995-09-30	112
1995-12-31	111
1996-03-31	107
1996-06-30	110
1996-09-30	107
1996-12-31	118
1997-03-31	112
1997-06-30	114
1997-09-30	93
1997-12-31	107
1998-03-31	109
1998-06-30	122
1998-09-30	118
1998-12-31	131
1999-03-31	106
1999-06-30	105
1999-09-30	155
1999-12-31	116
2000-03-31	116
2000-06-30	112
2000-09-30	111
2000-12-31	113
2001-03-31	109
2001-06-30	108
2001-09-30	110
2001-12-31	115
2002-03-31	122
2002-06-30	122
2002-09-30	127
2002-12-31	236
2003-03-31	228
2003-06-30	205
2003-09-30	184
2003-12-31	188
2004-03-31	246
2004-06-30	227
2004-09-30	240
2004-12-31	312
2005-03-31	276
2005-06-30	280
2005-09-30	314
2005-12-31	295
2006-03-31	292
2006-06-30	301
2006-09-30	342
2006-12-31	358
2007-03-31	341
2007-06-30	347
2007-09-30	424
2007-12-31	490
2008-03-31	509
2008-06-30	435
2008-09-30	449
2008-12-31	526
2009-03-31	682
2009-06-30	721
2009-09-30	654
2009-12-31	694
2010-03-31	559
2010-06-30	525
2010-09-30	572
2010-12-31	591
2011-03-31	618
2011-06-30	635
2011-09-30	629
2011-12-31	611
2012-03-31	876
2012-06-30	786
2012-09-30	862
2012-12-31	875
2013-03-31	786
2013-06-30	824
2013-09-30	835
2013-12-31	964
2014-03-31	940
2014-06-30	849
2014-09-30	944
2014-12-31	1013
2015-03-31	810
2015-06-30	858
2015-09-30	838
2015-12-31	907
2016-03-31	982
2016-06-30	955
2016-09-30	974
2016-12-31	979
2017-03-31	1175
2017-06-30	1574
2017-09-30	1708
2017-12-31	1782
2018-03-31	1771
2018-06-30	1911
2018-09-30	1790
2018-12-31	1842
2019-03-31	1866
2019-06-30	1506
2019-09-30	1348
2019-12-31	1273
2020-03-31	1264
2020-06-30	1356
2020-09-30	1046
2020-12-31	725
2021-03-31	517
2021-06-30	505
2021-09-30	476
2021-12-31	524
2022-03-31	427
2022-06-30	366
2022-09-30	368
2022-12-31	391
2023-03-31	380
2023-06-30	390
2023-09-30	376