Quarter	Millions of US Dollars
1993-01-01	0
1993-04-01	0
1993-07-01	0
1993-10-01	0
1994-01-01	0
1994-04-01	3
1994-07-01	6
1994-10-01	6
1995-01-01	6
1995-04-01	11
1995-07-01	40
1995-10-01	365
1996-01-01	365
1996-04-01	459
1996-07-01	252
1996-10-01	317
1997-01-01	375
1997-04-01	369
1997-07-01	366
1997-10-01	356
1998-01-01	350
1998-04-01	314
1998-07-01	459
1998-10-01	271
1999-01-01	216
1999-04-01	203
1999-07-01	228
1999-10-01	183
2000-01-01	230
2000-04-01	401
2000-07-01	462
2000-10-01	507
2001-01-01	555
2001-04-01	394
2001-07-01	288
2001-10-01	195
2002-01-01	377
2002-04-01	288
2002-07-01	415
2002-10-01	970
2003-01-01	1219
2003-04-01	1513
2003-07-01	1265
2003-10-01	1642
2004-01-01	2071
2004-04-01	1494
2004-07-01	2046
2004-10-01	2509
2005-01-01	1585
2005-04-01	3573
2005-07-01	3629
2005-10-01	1798
2006-01-01	1578
2006-04-01	2140
2006-07-01	1841
2006-10-01	3831
2007-01-01	2834
2007-04-01	5470
2007-07-01	5634
2007-10-01	6491
2008-01-01	8611
2008-04-01	9200
2008-07-01	7658
2008-10-01	6655
2009-01-01	4736
2009-04-01	5000
2009-07-01	5416
2009-10-01	5250
2010-01-01	4765
2010-04-01	4331
2010-07-01	4771
2010-10-01	4674
2011-01-01	5142
2011-04-01	5142
2011-07-01	4897
2011-10-01	4647
2012-01-01	4911
2012-04-01	4755
2012-07-01	5116
2012-10-01	4713
2013-01-01	4827
2013-04-01	4989
2013-07-01	5250
2013-10-01	5969
2014-01-01	6048
2014-04-01	6005
2014-07-01	5569
2014-10-01	5605
2015-01-01	5093
2015-04-01	5575
2015-07-01	5689
2015-10-01	5845
2016-01-01	6571
2016-04-01	6644
2016-07-01	6677
2016-10-01	6609
2017-01-01	7130
2017-04-01	8137
2017-07-01	8958
2017-10-01	10006
2018-01-01	10005