Quarter	Millions of US Dollars
1994-10-01	4111
1995-01-01	3997
1995-04-01	3871
1995-07-01	2974
1995-10-01	2885
1996-01-01	2516
1996-04-01	2208
1996-07-01	1978
1996-10-01	1725
1997-01-01	1589
1997-04-01	1629
1997-07-01	991
1997-10-01	679
1998-01-01	710
1998-04-01	4205
1998-07-01	5733
1998-10-01	11697
1999-01-01	14068
1999-04-01	15755
1999-07-01	14207
1999-10-01	16496
2000-01-01	15758
2000-04-01	15727
2000-07-01	15097
2000-10-01	15218
2001-01-01	15404
2001-04-01	14918
2001-07-01	15478
2001-10-01	15992
2002-01-01	17429
2002-04-01	18247
2002-07-01	24646
2002-10-01	25846
2003-01-01	26489
2003-04-01	27418
2003-07-01	28837
2003-10-01	27947
2004-01-01	29158
2004-04-01	27721
2004-07-01	30417
2004-10-01	32411
2005-01-01	32320
2005-04-01	31119
2005-07-01	33153
2005-10-01	33139
2006-01-01	35719
2006-04-01	37872
2006-07-01	39407
2006-10-01	42562
2007-01-01	50022
2007-04-01	53448
2007-07-01	53071
2007-10-01	59150
2008-01-01	56427
2008-04-01	55090
2008-07-01	54310
2008-10-01	53338
2009-01-01	55044
2009-04-01	57485
2009-07-01	62757
2009-10-01	64713
2010-01-01	69964
2010-04-01	73430
2010-07-01	80445
2010-10-01	83931
2011-01-01	83755
2011-04-01	83282
2011-07-01	86179
2011-10-01	82911
2012-01-01	88787
2012-04-01	91566
2012-07-01	93709
2012-10-01	98879
2013-01-01	106000
2013-04-01	104055
2013-07-01	104457
2013-10-01	101778
2014-01-01	104883
2014-04-01	103691
2014-07-01	103724
2014-10-01	102004
2015-01-01	107483
2015-04-01	104849
2015-07-01	99561
2015-10-01	103211
2016-01-01	117426
2016-04-01	116215
2016-07-01	121573
2016-10-01	112214
2017-01-01	120159
2017-04-01	120271
2017-07-01	126497
2017-10-01	131728
2018-01-01	139372