Quarter	US dollars
1986-09-30	185
1986-12-31	90
1987-03-31	98
1987-06-30	105
1987-09-30	129
1987-12-31	154
1988-03-31	124
1988-06-30	109
1988-09-30	127
1988-12-31	404
1989-03-31	665
1989-06-30	193
1989-09-30	191
1989-12-31	320
1990-03-31	336
1990-06-30	333
1990-09-30	486
1990-12-31	313
1991-03-31	320
1991-06-30	345
1991-09-30	334
1991-12-31	350
1992-03-31	283
1992-06-30	505
1992-09-30	422
1992-12-31	492
1993-03-31	341
1993-06-30	779
1993-09-30	820
1993-12-31	922
1994-03-31	762
1994-06-30	810
1994-09-30	937
1994-12-31	1008
1995-03-31	1144
1995-06-30	1268
1995-09-30	1339
1995-12-31	1558
1996-03-31	1418
1996-06-30	1583
1996-09-30	1580
1996-12-31	1617
1997-03-31	1674
1997-06-30	1906
1997-09-30	2060
1997-12-31	1986
1998-03-31	2019
1998-06-30	2199
1998-09-30	2095
1998-12-31	1936
1999-03-31	2221
1999-06-30	2177
1999-09-30	2291
1999-12-31	2529
2000-03-31	2623
2000-06-30	2489
2000-09-30	2357
2000-12-31	2362
2001-03-31	2311
2001-06-30	2241
2001-09-30	1994
2001-12-31	1897
2002-03-31	1780
2002-06-30	1925
2002-09-30	1608
2002-12-31	1444
2003-03-31	1464
2003-06-30	1447
2003-09-30	2029
2003-12-31	1387
2004-03-31	1249
2004-06-30	1441
2004-09-30	1589
2004-12-31	1954
2005-03-31	1986
2005-06-30	2470
2005-09-30	3033
2005-12-31	3198
2006-03-31	4068
2006-06-30	3788
2006-09-30	4849
2006-12-31	4869
2007-03-31	6592
2007-06-30	7318
2007-09-30	8223
2007-12-31	12653
2008-03-31	11518
2008-06-30	12481
2008-09-30	11308
2008-12-31	22668
2009-03-31	21666
2009-06-30	22776
2009-09-30	18752
2009-12-31	19724
2010-03-31	18386
2010-06-30	20478
2010-09-30	21307
2010-12-31	23744
2011-03-31	26082
2011-06-30	23924
2011-09-30	22822
2011-12-31	29905
2012-03-31	36710
2012-06-30	27913
2012-09-30	34676
2012-12-31	29328
2013-03-31	26738
2013-06-30	22538
2013-09-30	23904
2013-12-31	18336
2014-03-31	19473
2014-06-30	16594
2014-09-30	18270
2014-12-31	22049
2015-03-31	19387
2015-06-30	22391
2015-09-30	22024
2015-12-31	29740
2016-03-31	27637
2016-06-30	26989
2016-09-30	29189
2016-12-31	30964
2017-03-31	31539
2017-06-30	29743
2017-09-30	25313
2017-12-31	30012
2018-03-31	36561
2018-06-30	35690
2018-09-30	38098
2018-12-31	38674
2019-03-31	40351
2019-06-30	45054
2019-09-30	45692
2019-12-31	52929
2020-03-31	49557
2020-06-30	49333
2020-09-30	57471
2020-12-31	55687
2021-03-31	56298
2021-06-30	56335
2021-09-30	52206
2021-12-31	59900
2022-03-31	60676
2022-06-30	60083
2022-09-30	58354
2022-12-31	58667
2023-03-31	54481
2023-06-30	56795
2023-09-30	55519