Quarter	Millions of US Dollars
1989-01-01	1942
1989-04-01	2358
1989-07-01	2709
1989-10-01	2959
1990-01-01	3198
1990-04-01	3319
1990-07-01	3517
1990-10-01	3799
1991-01-01	4279
1991-04-01	4299
1991-07-01	4576
1991-10-01	4756
1992-01-01	4777
1992-04-01	5013
1992-07-01	5349
1992-10-01	5325
1993-01-01	5527
1993-04-01	5914
1993-07-01	6273
1993-10-01	6503
1994-01-01	6665
1994-04-01	6958
1994-07-01	7691
1994-10-01	7617
1995-01-01	8609
1995-04-01	8880
1995-07-01	8580
1995-10-01	9053
1996-01-01	9594
1996-04-01	9926
1996-07-01	10021
1996-10-01	10368
1997-01-01	10045
1997-04-01	10271
1997-07-01	9618
1997-10-01	8879
1998-01-01	9604
1998-04-01	9632
1998-07-01	10864
1998-10-01	12168
1999-01-01	12478
1999-04-01	13276
1999-07-01	13317
1999-10-01	13905
2000-01-01	14376
2000-04-01	15168
2000-07-01	16102
2000-10-01	17230
2001-01-01	18275
2001-04-01	18429
2001-07-01	20264
2001-10-01	21068
2002-01-01	21558
2002-04-01	21384
2002-07-01	22764
2002-10-01	23799
2003-01-01	24159
2003-04-01	23762
2003-07-01	26083
2003-10-01	26998
2004-01-01	27932
2004-04-01	26054
2004-07-01	30109
2004-10-01	31816
2005-01-01	31049
2005-04-01	31747
2005-07-01	35025
2005-10-01	34079
2006-01-01	35542
2006-04-01	37626
2006-07-01	37836
2006-10-01	39116
2007-01-01	38167
2007-04-01	41435
2007-07-01	45029
2007-10-01	45353
2008-01-01	49351
2008-04-01	50720
2008-07-01	47586
2008-10-01	47708
2009-01-01	44002
2009-04-01	48195
2009-07-01	51967
2009-10-01	51077
2010-01-01	53523
2010-04-01	53633
2010-07-01	55987
2010-10-01	58640
2011-01-01	59837
2011-04-01	65587
2011-07-01	59573
2011-10-01	61082
2012-01-01	67357
2012-04-01	65495
2012-07-01	69593
2012-10-01	67644
2013-01-01	69824
2013-04-01	68148
2013-07-01	66486
2013-10-01	68108
2014-01-01	68996
2014-04-01	73872
2014-07-01	73006
2014-10-01	68123
2015-01-01	66997
2015-04-01	72102
2015-07-01	66639
2015-10-01	68639
2016-01-01	75361
2016-04-01	74525
2016-07-01	71941
2016-10-01	69887
2017-01-01	75569
2017-04-01	74822
2017-07-01	77767
2017-10-01	79710
2018-01-01	84725