Quarter	US dollars
1986-09-30	175
1986-12-31	170
1987-03-31	172
1987-06-30	178
1987-09-30	156
1987-12-31	231
1988-03-31	226
1988-06-30	223
1988-09-30	215
1988-12-31	234
1989-03-31	259
1989-06-30	268
1989-09-30	252
1989-12-31	290
1990-03-31	341
1990-06-30	265
1990-09-30	272
1990-12-31	321
1991-03-31	282
1991-06-30	261
1991-09-30	273
1991-12-31	273
1992-03-31	257
1992-06-30	257
1992-09-30	288
1992-12-31	251
1993-03-31	228
1993-06-30	211
1993-09-30	212
1993-12-31	274
1994-03-31	674
1994-06-30	591
1994-09-30	635
1994-12-31	466
1995-03-31	509
1995-06-30	415
1995-09-30	438
1995-12-31	510
1996-03-31	440
1996-06-30	339
1996-09-30	450
1996-12-31	302
1997-03-31	1047
1997-06-30	754
1997-09-30	1081
1997-12-31	1139
1998-03-31	959
1998-06-30	2008
1998-09-30	1843
1998-12-31	2186
1999-03-31	2201
1999-06-30	1346
1999-09-30	2266
1999-12-31	1595
2000-03-31	1822
2000-06-30	2814
2000-09-30	3079
2000-12-31	2912
2001-03-31	2457
2001-06-30	2015
2001-09-30	2410
2001-12-31	503
2002-03-31	187
2002-06-30	167
2002-09-30	205
2002-12-31	260
2003-03-31	232
2003-06-30	244
2003-09-30	205
2003-12-31	236
2004-03-31	238
2004-06-30	195
2004-09-30	141
2004-12-31	235
2005-03-31	254
2005-06-30	449
2005-09-30	335
2005-12-31	375
2006-03-31	347
2006-06-30	380
2006-09-30	443
2006-12-31	524
2007-03-31	450
2007-06-30	414
2007-09-30	521
2007-12-31	448
2008-03-31	627
2008-06-30	559
2008-09-30	558
2008-12-31	531
2009-03-31	812
2009-06-30	545
2009-09-30	405
2009-12-31	344
2010-03-31	345
2010-06-30	371
2010-09-30	347
2010-12-31	362
2011-03-31	526
2011-06-30	408
2011-09-30	312
2011-12-31	241
2012-03-31	426
2012-06-30	227
2012-09-30	251
2012-12-31	413
2013-03-31	341
2013-06-30	191
2013-09-30	266
2013-12-31	176
2014-03-31	194
2014-06-30	166
2014-09-30	175
2014-12-31	129
2015-03-31	178
2015-06-30	168
2015-09-30	185
2015-12-31	212
2016-03-31	221
2016-06-30	181
2016-09-30	530
2016-12-31	243
2017-03-31	195
2017-06-30	188
2017-09-30	198
2017-12-31	214
2018-03-31	300
2018-06-30	314
2018-09-30	408
2018-12-31	372
2019-03-31	376
2019-06-30	472
2019-09-30	239
2019-12-31	420
2020-03-31	455
2020-06-30	267
2020-09-30	179
2020-12-31	174
2021-03-31	200
2021-06-30	225
2021-09-30	202
2021-12-31	180
2022-03-31	237
2022-06-30	168
2022-09-30	219
2022-12-31	239
2023-03-31	532
2023-06-30	610
2023-09-30	814