Quarter	US dollars
1986-09-30	0
1986-12-31	18637
1987-03-31	18478
1987-06-30	18608
1987-09-30	18678
1987-12-31	20636
1988-03-31	22112
1988-06-30	22002
1988-09-30	22478
1988-12-31	24076
1989-03-31	23643
1989-06-30	23264
1989-09-30	24805
1989-12-31	25017
1990-03-31	25902
1990-06-30	26329
1990-09-30	28242
1990-12-31	26502
1991-03-31	26143
1991-06-30	26065
1991-09-30	25879
1991-12-31	26037
1992-03-31	26933
1992-06-30	28443
1992-09-30	28324
1992-12-31	26759
1993-03-31	27254
1993-06-30	29476
1993-09-30	26039
1993-12-31	27581
1994-03-31	32670
1994-06-30	32685
1994-09-30	33632
1994-12-31	36302
1995-03-31	39635
1995-06-30	40188
1995-09-30	40425
1995-12-31	41746
1996-03-31	45151
1996-06-30	47004
1996-09-30	49337
1996-12-31	53686
1997-03-31	55892
1997-06-30	57976
1997-09-30	58668
1997-12-31	57525
1998-03-31	59856
1998-06-30	61076
1998-09-30	64290
1998-12-31	64040
1999-03-31	65593
1999-06-30	64942
1999-09-30	68213
1999-12-31	67088
2000-03-31	68590
2000-06-30	73595
2000-09-30	74481
2000-12-31	78115
2001-03-31	81116
2001-06-30	84499
2001-09-30	91280
2001-12-31	93095
2002-03-31	93836
2002-06-30	100553
2002-09-30	118680
2002-12-31	127848
2003-03-31	133487
2003-06-30	140867
2003-09-30	157466
2003-12-31	170522
2004-03-31	174303
2004-06-30	186497
2004-09-30	196177
2004-12-31	209206
2005-03-31	212773
2005-06-30	218416
2005-09-30	224531
2005-12-31	232723
2006-03-31	253935
2006-06-30	270774
2006-09-30	280801
2006-12-31	296688
2007-03-31	308094
2007-06-30	337135
2007-09-30	363832
2007-12-31	395602
2008-03-31	426510
2008-06-30	442718
2008-09-30	427952
2008-12-31	420750
2009-03-31	413438
2009-06-30	434369
2009-09-30	465861
2009-12-31	488999
2010-03-31	486373
2010-06-30	470763
2010-09-30	514734
2010-12-31	526881
2011-03-31	546070
2011-06-30	566809
2011-09-30	520013
2011-12-31	538274
2012-03-31	550503
2012-06-30	526964
2012-09-30	529386
2012-12-31	529709
2013-03-31	501967
2013-06-30	478811
2013-09-30	494678
2013-12-31	500152
2014-03-31	490671
2014-06-30	510992
2014-09-30	489053
2014-12-31	469208
2015-03-31	462298
2015-06-30	479771
2015-09-30	461495
2015-12-31	457768
2016-03-31	460208
2016-06-30	464600
2016-09-30	458005
2016-12-31	424931
2017-03-31	439156
2017-06-30	461650
2017-09-30	478184
2017-12-31	474267
2018-03-31	487965
2018-06-30	457327
2018-09-30	463768
2018-12-31	471688
2019-03-31	475826
2019-06-30	492232
2019-09-30	490731
2019-12-31	492436
2020-03-31	473789
2020-06-30	482242
2020-09-30	479901
2020-12-31	474632
2021-03-31	458606
2021-06-30	454626
2021-09-30	441313
2021-12-31	439522
2022-03-31	422024
2022-06-30	395368
2022-09-30	383225
2022-12-31	408720
2023-03-31	419438
2023-06-30	403479
2023-09-30	397621