Quarter	US dollars
1986-09-30	97000
1986-12-31	88000
1987-03-31	90000
1987-06-30	95000
1987-09-30	98000
1987-12-31	105000
1988-03-31	99000
1988-06-30	97000
1988-09-30	95000
1988-12-31	103000
1989-03-31	106000
1989-06-30	107000
1989-09-30	105000
1989-12-31	110000
1990-03-31	115000
1990-06-30	116000
1990-09-30	123000
1990-12-31	127000
1991-03-31	122000
1991-06-30	121000
1991-09-30	127000
1991-12-31	92000
1992-03-31	89000
1992-06-30	90000
1992-09-30	89000
1992-12-31	92000
1993-03-31	90000
1993-06-30	94000
1993-09-30	90000
1993-12-31	97000
1994-03-31	105000
1994-06-30	112000
1994-09-30	121000
1994-12-31	129000
1995-03-31	138000
1995-06-30	132000
1995-09-30	139000
1995-12-31	148000
1996-03-31	155000
1996-06-30	160000
1996-09-30	172000
1996-12-31	176000
1997-03-31	205000
1997-06-30	199000
1997-09-30	189000
1997-12-31	205000
1998-03-31	215000
1998-06-30	216000
1998-09-30	213000
1998-12-31	194000
1999-03-31	204448
1999-06-30	168937
1999-09-30	183558
1999-12-31	177561
2000-03-31	179508
2000-06-30	218371
2000-09-30	220792
2000-12-31	213601
2001-03-31	198088
2001-06-30	211325
2001-09-30	237163
2001-12-31	239966
2002-03-31	223551
2002-06-30	222768
2002-09-30	235531
2002-12-31	228296
2003-03-31	218459
2003-06-30	232351
2003-09-30	228348
2003-12-31	248665
2004-03-31	264458
2004-06-30	280670
2004-09-30	279200
2004-12-31	280316
2005-03-31	296064
2005-06-30	317203
2005-09-30	300942
2005-12-31	337787
2006-03-31	377164
2006-06-30	368900
2006-09-30	394545
2006-12-31	446614
2007-03-31	501404
2007-06-30	527682
2007-09-30	532810
2007-12-31	581680
2008-03-31	692614
2008-06-30	602716
2008-09-30	566092
2008-12-31	651053
2009-03-31	715795
2009-06-30	609053
2009-09-30	580444
2009-12-31	556033
2010-03-31	549214
2010-06-30	548801
2010-09-30	578682
2010-12-31	617542
2011-03-31	680773
2011-06-30	685532
2011-09-30	1107861
2011-12-31	1084996
2012-03-31	1031013
2012-06-30	864127
2012-09-30	865483
2012-12-31	880283
2013-03-31	874429
2013-06-30	860158
2013-09-30	860886
2013-12-31	869293
2014-03-31	885516
2014-06-30	903115
2014-09-30	919421
2014-12-31	932262
2015-03-31	894636
2015-06-30	913476
2015-09-30	902391
2015-12-31	883819
2016-03-31	905188
2016-06-30	914402
2016-09-30	948038
2016-12-31	969860
2017-03-31	986020
2017-06-30	1046633
2017-09-30	1090966
2017-12-31	1128868
2018-03-31	1213054
2018-06-30	1167003
2018-09-30	1091758
2018-12-31	1178509
2019-03-31	1156113
2019-06-30	1141735
2019-09-30	1109068
2019-12-31	1069056
2020-03-31	1272127
2020-06-30	1194712
2020-09-30	1239396
2020-12-31	1347531
2021-03-31	1406920
2021-06-30	1374624
2021-09-30	1353268
2021-12-31	1317547
2022-03-31	1408623
2022-06-30	1368463
2022-09-30	1328936
2022-12-31	1259664
2023-03-31	1266368
2023-06-30	1156014
2023-09-30	1182598