Quarter	US dollars
1986-09-30	8404
1986-12-31	8476
1987-03-31	8929
1987-06-30	9092
1987-09-30	8845
1987-12-31	9883
1988-03-31	10026
1988-06-30	10008
1988-09-30	9026
1988-12-31	9172
1989-03-31	8697
1989-06-30	9189
1989-09-30	8717
1989-12-31	10287
1990-03-31	10337
1990-06-30	11665
1990-09-30	12626
1990-12-31	13552
1991-03-31	13072
1991-06-30	12427
1991-09-30	13153
1991-12-31	13420
1992-03-31	13254
1992-06-30	13687
1992-09-30	15348
1992-12-31	14888
1993-03-31	14074
1993-06-30	13507
1993-09-30	13266
1993-12-31	13302
1994-03-31	13620
1994-06-30	13550
1994-09-30	14273
1994-12-31	15741
1995-03-31	15071
1995-06-30	15756
1995-09-30	15900
1995-12-31	18407
1996-03-31	17703
1996-06-30	17094
1996-09-30	19251
1996-12-31	21359
1997-03-31	23592
1997-06-30	23815
1997-09-30	27609
1997-12-31	27016
1998-03-31	32263
1998-06-30	34389
1998-09-30	38060
1998-12-31	38718
1999-03-31	37753
1999-06-30	39662
1999-09-30	44905
1999-12-31	46566
2000-03-31	49638
2000-06-30	51595
2000-09-30	54109
2000-12-31	54428
2001-03-31	60735
2001-06-30	61736
2001-09-30	71542
2001-12-31	69822
2002-03-31	74719
2002-06-30	74325
2002-09-30	76289
2002-12-31	83359
2003-03-31	92225
2003-06-30	101150
2003-09-30	107434
2003-12-31	129602
2004-03-31	149699
2004-06-30	156719
2004-09-30	158473
2004-12-31	180310
2005-03-31	189405
2005-06-30	190135
2005-09-30	198025
2005-12-31	203943
2006-03-31	209073
2006-06-30	214646
2006-09-30	246376
2006-12-31	293144
2007-03-31	350986
2007-06-30	359820
2007-09-30	389049
2007-12-31	388998
2008-03-31	434229
2008-06-30	433496
2008-09-30	403176
2008-12-31	362105
2009-03-31	322769
2009-06-30	362041
2009-09-30	362973
2009-12-31	344913
2010-03-31	340409
2010-06-30	304724
2010-09-30	336264
2010-12-31	268721
2011-03-31	269821
2011-06-30	274822
2011-09-30	255916
2011-12-31	235624
2012-03-31	230245
2012-06-30	217413
2012-09-30	206540
2012-12-31	201967
2013-03-31	196495
2013-06-30	197710
2013-09-30	185623
2013-12-31	184529
2014-03-31	177144
2014-06-30	179283
2014-09-30	174858
2014-12-31	177507
2015-03-31	176538
2015-06-30	170932
2015-09-30	155615
2015-12-31	156868
2016-03-31	157718
2016-06-30	148677
2016-09-30	151580
2016-12-31	153307
2017-03-31	149940
2017-06-30	153407
2017-09-30	151571
2017-12-31	153008
2018-03-31	176959
2018-06-30	165650
2018-09-30	175163
2018-12-31	217956
2019-03-31	214079
2019-06-30	196193
2019-09-30	189491
2019-12-31	201099
2020-03-31	197500
2020-06-30	193970
2020-09-30	201739
2020-12-31	231147
2021-03-31	225785
2021-06-30	206078
2021-09-30	203112
2021-12-31	200476
2022-03-31	203597
2022-06-30	180785
2022-09-30	171003
2022-12-31	161098
2023-03-31	164359
2023-06-30	173966
2023-09-30	161539