Quarter	Millions of US Dollars
1989-10-01	8863
1990-01-01	9440
1990-04-01	9493
1990-07-01	10386
1990-10-01	11638
1991-01-01	10478
1991-04-01	10152
1991-07-01	11048
1991-10-01	12262
1992-01-01	11402
1992-04-01	11841
1992-07-01	12999
1992-10-01	11554
1993-01-01	11313
1993-04-01	11367
1993-07-01	12739
1993-10-01	12196
1994-01-01	12303
1994-04-01	14119
1994-07-01	14834
1994-10-01	15300
1995-01-01	16597
1995-04-01	16743
1995-07-01	16140
1995-10-01	17108
1996-01-01	16547
1996-04-01	16994
1996-07-01	17629
1996-10-01	18439
1997-01-01	16906
1997-04-01	16984
1997-07-01	16919
1997-10-01	17427
1998-01-01	16453
1998-04-01	18452
1998-07-01	20025
1998-10-01	22510
1999-01-01	21691
1999-04-01	22633
1999-07-01	26979
1999-10-01	26206
2000-01-01	25899
2000-04-01	31573
2000-07-01	37774
2000-10-01	49061
2001-01-01	47953
2001-04-01	55109
2001-07-01	53210
2001-10-01	53936
2002-01-01	53735
2002-04-01	58095
2002-07-01	57612
2002-10-01	58094
2003-01-01	61411
2003-04-01	65602
2003-07-01	63613
2003-10-01	70356
2004-01-01	68797
2004-04-01	66394
2004-07-01	61584
2004-10-01	64898
2005-01-01	61443
2005-04-01	57207
2005-07-01	61718
2005-10-01	59233
2006-01-01	62760
2006-04-01	65325
2006-07-01	62816
2006-10-01	69990
2007-01-01	72342
2007-04-01	77897
2007-07-01	81766
2007-10-01	87420
2008-01-01	95825
2008-04-01	91623
2008-07-01	87105
2008-10-01	90812
2009-01-01	93376
2009-04-01	105030
2009-07-01	110129
2009-10-01	110522
2010-01-01	108139
2010-04-01	105867
2010-07-01	116465
2010-10-01	114443
2011-01-01	118297
2011-04-01	120858
2011-07-01	111560
2011-10-01	111349
2012-01-01	115104
2012-04-01	112282
2012-07-01	120165
2012-10-01	98640
2013-01-01	99466
2013-04-01	103459
2013-07-01	109214
2013-10-01	104682
2014-01-01	100740
2014-04-01	102812
2014-07-01	94599
2014-10-01	94963
2015-01-01	87720
2015-04-01	90545
2015-07-01	89407
2015-10-01	86650
2016-01-01	103384
2016-04-01	117702
2016-07-01	136426
2016-10-01	87900
2017-01-01	103235
2017-04-01	88505
2017-07-01	96993
2017-10-01	103274
2018-01-01	110529