Quarter	US dollars
1986-09-30	28691
1986-12-31	27917
1987-03-31	30293
1987-06-30	30680
1987-09-30	34727
1987-12-31	34771
1988-03-31	32424
1988-06-30	33025
1988-09-30	32682
1988-12-31	29887
1989-03-31	26682
1989-06-30	28449
1989-09-30	29807
1989-12-31	29338
1990-03-31	28829
1990-06-30	32064
1990-09-30	32602
1990-12-31	32864
1991-03-31	31664
1991-06-30	32398
1991-09-30	32753
1991-12-31	31639
1992-03-31	30279
1992-06-30	32434
1992-09-30	28478
1992-12-31	26621
1993-03-31	25521
1993-06-30	30406
1993-09-30	29824
1993-12-31	26000
1994-03-31	29564
1994-06-30	29434
1994-09-30	33374
1994-12-31	34372
1995-03-31	32457
1995-06-30	34492
1995-09-30	34731
1995-12-31	37328
1996-03-31	36711
1996-06-30	35981
1996-09-30	41784
1996-12-31	43725
1997-03-31	42163
1997-06-30	48998
1997-09-30	47155
1997-12-31	38723
1998-03-31	32812
1998-06-30	30021
1998-09-30	30127
1998-12-31	24926
1999-03-31	23797
1999-06-30	21844
1999-09-30	20506
1999-12-31	21276
2000-03-31	19577
2000-06-30	21161
2000-09-30	22595
2000-12-31	22976
2001-03-31	23881
2001-06-30	20796
2001-09-30	26244
2001-12-31	21214
2002-03-31	19108
2002-06-30	19917
2002-09-30	19493
2002-12-31	20407
2003-03-31	24556
2003-06-30	28057
2003-09-30	28591
2003-12-31	24324
2004-03-31	26085
2004-06-30	27695
2004-09-30	29848
2004-12-31	29929
2005-03-31	24624
2005-06-30	26817
2005-09-30	26491
2005-12-31	25604
2006-03-31	34716
2006-06-30	32043
2006-09-30	36464
2006-12-31	42950
2007-03-31	28954
2007-06-30	35845
2007-09-30	41574
2007-12-31	42650
2008-03-31	46298
2008-06-30	47813
2008-09-30	43015
2008-12-31	35413
2009-03-31	32911
2009-06-30	30733
2009-09-30	33907
2009-12-31	31049
2010-03-31	36012
2010-06-30	40148
2010-09-30	41193
2010-12-31	48053
2011-03-31	53895
2011-06-30	63392
2011-09-30	63002
2011-12-31	56001
2012-03-31	57774
2012-06-30	61485
2012-09-30	50346
2012-12-31	53987
2013-03-31	57230
2013-06-30	55372
2013-09-30	64062
2013-12-31	69436
2014-03-31	79238
2014-06-30	93658
2014-09-30	82486
2014-12-31	78313
2015-03-31	79013
2015-06-30	73227
2015-09-30	66817
2015-12-31	64950
2016-03-31	65521
2016-06-30	73392
2016-09-30	71348
2016-12-31	74862
2017-03-31	73986
2017-06-30	75591
2017-09-30	79315
2017-12-31	82068
2018-03-31	80143
2018-06-30	84141
2018-09-30	79095
2018-12-31	89990
2019-03-31	76120
2019-06-30	82253
2019-09-30	82733
2019-12-31	88301
2020-03-31	102761
2020-06-30	82211
2020-09-30	87975
2020-12-31	90518
2021-03-31	101683
2021-06-30	103700
2021-09-30	110426
2021-12-31	101955
2022-03-31	102918
2022-06-30	105895
2022-09-30	113626
2022-12-31	101570
2023-03-31	116989
2023-06-30	116148
2023-09-30	113628