Quarter	US dollars
1986-09-30	1335
1986-12-31	1398
1987-03-31	1175
1987-06-30	1240
1987-09-30	1139
1987-12-31	1096
1988-03-31	910
1988-06-30	982
1988-09-30	942
1988-12-31	1298
1989-03-31	1068
1989-06-30	1141
1989-09-30	1136
1989-12-31	1170
1990-03-31	1056
1990-06-30	1190
1990-09-30	1251
1990-12-31	1340
1991-03-31	1211
1991-06-30	990
1991-09-30	949
1991-12-31	982
1992-03-31	990
1992-06-30	1204
1992-09-30	1171
1992-12-31	1128
1993-03-31	965
1993-06-30	954
1993-09-30	1033
1993-12-31	1069
1994-03-31	1030
1994-06-30	1135
1994-09-30	1516
1994-12-31	1371
1995-03-31	1295
1995-06-30	1474
1995-09-30	1368
1995-12-31	1526
1996-03-31	1619
1996-06-30	1634
1996-09-30	1894
1996-12-31	1628
1997-03-31	1686
1997-06-30	2019
1997-09-30	1858
1997-12-31	1964
1998-03-31	2138
1998-06-30	2493
1998-09-30	2592
1998-12-31	3822
1999-03-31	3743
1999-06-30	3402
1999-09-30	2895
1999-12-31	2675
2000-03-31	2655
2000-06-30	3222
2000-09-30	2740
2000-12-31	3674
2001-03-31	3486
2001-06-30	3550
2001-09-30	3584
2001-12-31	3572
2002-03-31	4012
2002-06-30	4621
2002-09-30	4295
2002-12-31	4700
2003-03-31	4500
2003-06-30	4780
2003-09-30	5326
2003-12-31	5397
2004-03-31	5819
2004-06-30	6227
2004-09-30	7012
2004-12-31	9740
2005-03-31	6816
2005-06-30	6822
2005-09-30	7011
2005-12-31	9052
2006-03-31	12219
2006-06-30	12234
2006-09-30	14269
2006-12-31	15443
2007-03-31	15326
2007-06-30	19126
2007-09-30	25301
2007-12-31	31658
2008-03-31	38338
2008-06-30	38616
2008-09-30	39654
2008-12-31	38448
2009-03-31	35559
2009-06-30	35358
2009-09-30	35726
2009-12-31	34123
2010-03-31	34973
2010-06-30	35703
2010-09-30	36032
2010-12-31	32884
2011-03-31	32702
2011-06-30	34308
2011-09-30	35418
2011-12-31	37224
2012-03-31	35666
2012-06-30	37826
2012-09-30	37651
2012-12-31	46367
2013-03-31	42255
2013-06-30	41884
2013-09-30	45746
2013-12-31	40428
2014-03-31	48505
2014-06-30	46077
2014-09-30	49516
2014-12-31	50179
2015-03-31	49359
2015-06-30	54010
2015-09-30	56153
2015-12-31	63603
2016-03-31	54988
2016-06-30	56351
2016-09-30	52972
2016-12-31	49368
2017-03-31	49561
2017-06-30	49314
2017-09-30	51696
2017-12-31	56795
2018-03-31	59166
2018-06-30	54699
2018-09-30	55111
2018-12-31	55449
2019-03-31	59004
2019-06-30	60665
2019-09-30	60340
2019-12-31	60227
2020-03-31	58810
2020-06-30	56766
2020-09-30	56563
2020-12-31	57383
2021-03-31	58441
2021-06-30	60229
2021-09-30	55794
2021-12-31	56418
2022-03-31	56514
2022-06-30	57091
2022-09-30	54042
2022-12-31	56673
2023-03-31	55977
2023-06-30	58894
2023-09-30	60434