Quarter	US dollars
1986-09-30	7855
1986-12-31	7873
1987-03-31	7969
1987-06-30	8065
1987-09-30	7859
1987-12-31	8028
1988-03-31	7970
1988-06-30	7581
1988-09-30	7690
1988-12-31	6670
1989-03-31	6268
1989-06-30	6188
1989-09-30	6596
1989-12-31	5927
1990-03-31	5681
1990-06-30	6238
1990-09-30	6077
1990-12-31	5589
1991-03-31	5922
1991-06-30	5599
1991-09-30	5647
1991-12-31	5536
1992-03-31	5856
1992-06-30	5672
1992-09-30	5894
1992-12-31	6039
1993-03-31	5471
1993-06-30	5589
1993-09-30	5468
1993-12-31	4876
1994-03-31	4920
1994-06-30	5870
1994-09-30	5176
1994-12-31	5510
1995-03-31	6294
1995-06-30	6263
1995-09-30	6100
1995-12-31	6380
1996-03-31	6341
1996-06-30	6671
1996-09-30	6548
1996-12-31	7942
1997-03-31	9648
1997-06-30	10016
1997-09-30	10514
1997-12-31	9818
1998-03-31	10456
1998-06-30	9064
1998-09-30	8730
1998-12-31	8670
1999-03-31	9247
1999-06-30	9358
1999-09-30	8615
1999-12-31	8952
2000-03-31	7813
2000-06-30	7164
2000-09-30	7338
2000-12-31	7090
2001-03-31	8986
2001-06-30	8374
2001-09-30	8612
2001-12-31	7183
2002-03-31	6418
2002-06-30	7343
2002-09-30	6826
2002-12-31	7742
2003-03-31	7623
2003-06-30	8132
2003-09-30	8703
2003-12-31	7770
2004-03-31	8063
2004-06-30	8722
2004-09-30	9051
2004-12-31	10200
2005-03-31	9592
2005-06-30	11797
2005-09-30	10462
2005-12-31	11653
2006-03-31	12687
2006-06-30	12936
2006-09-30	15151
2006-12-31	16394
2007-03-31	15913
2007-06-30	18517
2007-09-30	17414
2007-12-31	20102
2008-03-31	18782
2008-06-30	19146
2008-09-30	19060
2008-12-31	19879
2009-03-31	17837
2009-06-30	16261
2009-09-30	16612
2009-12-31	14965
2010-03-31	14836
2010-06-30	13124
2010-09-30	15480
2010-12-31	15944
2011-03-31	14904
2011-06-30	14153
2011-09-30	13663
2011-12-31	12066
2012-03-31	13904
2012-06-30	13786
2012-09-30	16527
2012-12-31	16743
2013-03-31	15607
2013-06-30	15547
2013-09-30	15574
2013-12-31	18178
2014-03-31	18309
2014-06-30	18839
2014-09-30	17986
2014-12-31	19062
2015-03-31	20560
2015-06-30	19057
2015-09-30	18420
2015-12-31	18375
2016-03-31	18031
2016-06-30	17118
2016-09-30	18769
2016-12-31	16730
2017-03-31	19221
2017-06-30	19660
2017-09-30	21203
2017-12-31	23179
2018-03-31	23881
2018-06-30	21102
2018-09-30	20889
2018-12-31	21337
2019-03-31	24010
2019-06-30	24530
2019-09-30	22225
2019-12-31	21909
2020-03-31	17999
2020-06-30	17633
2020-09-30	16990
2020-12-31	16175
2021-03-31	15474
2021-06-30	13071
2021-09-30	11848
2021-12-31	10752
2022-03-31	13651
2022-06-30	11629
2022-09-30	12435
2022-12-31	14253
2023-03-31	14058
2023-06-30	10491
2023-09-30	12532