Quarter	US dollars
1986-09-30	39761
1986-12-31	46911
1987-03-31	49982
1987-06-30	52113
1987-09-30	51117
1987-12-31	57099
1988-03-31	54208
1988-06-30	48482
1988-09-30	50967
1988-12-31	57081
1989-03-31	60013
1989-06-30	65059
1989-09-30	67416
1989-12-31	84408
1990-03-31	89223
1990-06-30	91553
1990-09-30	98807
1990-12-31	113926
1991-03-31	106584
1991-06-30	94203
1991-09-30	103247
1991-12-31	113545
1992-03-31	104071
1992-06-30	108941
1992-09-30	120417
1992-12-31	117999
1993-03-31	126593
1993-06-30	129525
1993-09-30	137817
1993-12-31	145371
1994-03-31	144996
1994-06-30	144083
1994-09-30	143760
1994-12-31	161494
1995-03-31	173975
1995-06-30	188746
1995-09-30	189969
1995-12-31	175899
1996-03-31	158408
1996-06-30	153972
1996-09-30	149059
1996-12-31	158750
1997-03-31	144965
1997-06-30	146963
1997-09-30	145619
1997-12-31	148484
1998-03-31	163055
1998-06-30	162495
1998-09-30	174655
1998-12-31	167877
1999-03-31	147014
1999-06-30	139547
1999-09-30	140223
1999-12-31	135205
2000-03-31	140990
2000-06-30	138321
2000-09-30	134907
2000-12-31	136379
2001-03-31	151474
2001-06-30	143137
2001-09-30	175035
2001-12-31	167947
2002-03-31	171304
2002-06-30	201138
2002-09-30	215747
2002-12-31	237028
2003-03-31	288547
2003-06-30	341725
2003-09-30	324322
2003-12-31	352881
2004-03-31	375187
2004-06-30	366621
2004-09-30	414617
2004-12-31	465214
2005-03-31	494550
2005-06-30	467263
2005-09-30	467276
2005-12-31	414986
2006-03-31	488567
2006-06-30	536441
2006-09-30	513080
2006-12-31	528304
2007-03-31	547726
2007-06-30	585432
2007-09-30	605979
2007-12-31	620277
2008-03-31	693384
2008-06-30	652832
2008-09-30	635345
2008-12-31	585875
2009-03-31	539561
2009-06-30	555847
2009-09-30	521303
2009-12-31	521604
2010-03-31	486835
2010-06-30	443021
2010-09-30	461618
2010-12-31	473209
2011-03-31	471175
2011-06-30	492491
2011-09-30	495851
2011-12-31	467573
2012-03-31	500822
2012-06-30	471359
2012-09-30	491638
2012-12-31	470856
2013-03-31	445500
2013-06-30	418014
2013-09-30	401953
2013-12-31	433821
2014-03-31	437325
2014-06-30	424035
2014-09-30	382828
2014-12-31	364718
2015-03-31	354030
2015-06-30	333223
2015-09-30	315402
2015-12-31	280689
2016-03-31	315527
2016-06-30	325301
2016-09-30	306928
2016-12-31	280129
2017-03-31	289560
2017-06-30	318011
2017-09-30	299301
2017-12-31	272417
2018-03-31	305363
2018-06-30	297331
2018-09-30	306978
2018-12-31	303066
2019-03-31	319830
2019-06-30	325794
2019-09-30	327456
2019-12-31	298320
2020-03-31	349347
2020-06-30	354040
2020-09-30	398935
2020-12-31	378878
2021-03-31	422362
2021-06-30	421660
2021-09-30	388091
2021-12-31	388443
2022-03-31	397711
2022-06-30	349314
2022-09-30	335579
2022-12-31	333802
2023-03-31	324279
2023-06-30	332389
2023-09-30	344412