Quarter	Millions of US Dollars
1994-01-01	984
1994-04-01	450
1994-07-01	640
1994-10-01	22
1995-01-01	-104
1995-04-01	195
1995-07-01	83
1995-10-01	1437
1996-01-01	508
1996-04-01	515
1996-07-01	1002
1996-10-01	1295
1997-01-01	1015
1997-04-01	788
1997-07-01	-196
1997-10-01	48
1998-01-01	382
1998-04-01	122
1998-07-01	-173
1998-10-01	898
1999-01-01	328
1999-04-01	207
1999-07-01	1038
1999-10-01	866
2000-01-01	351
2000-04-01	246
2000-07-01	239
2000-10-01	392
2001-01-01	334
2001-04-01	88
2001-07-01	-241
2001-10-01	534
2002-01-01	-186
2002-04-01	130
2002-07-01	108
2002-10-01	-1795
2003-01-01	130
2003-04-01	-318
2003-07-01	566
2003-10-01	549
2004-01-01	603
2004-04-01	6
2004-07-01	-399
2004-10-01	-659
2005-01-01	-313
2005-04-01	545
2005-07-01	836
2005-10-01	745
2006-01-01	-628
2006-04-01	234
2006-07-01	674
2006-10-01	402
2007-01-01	742
2007-04-01	-1200
2007-07-01	555
2007-10-01	721
2008-01-01	740
2008-04-01	1427
2008-07-01	1267
2008-10-01	1629
2009-01-01	667
2009-04-01	-511
2009-07-01	1816
2009-10-01	1990
2010-01-01	428
2010-04-01	-120
2010-07-01	-269
2010-10-01	2186
2011-01-01	-235
2011-04-01	97
2011-07-01	1563
2011-10-01	-636
2012-01-01	737
2012-04-01	-1309
2012-07-01	1037
2012-10-01	96
2013-01-01	554
2013-04-01	22
2013-07-01	2120
2013-10-01	1359
2014-01-01	1391
2014-04-01	850
2014-07-01	354
2014-10-01	976
2015-01-01	1009
2015-04-01	431
2015-07-01	154
2015-10-01	701
2016-01-01	541
2016-04-01	176
2016-07-01	1635
2016-10-01	1136
2017-01-01	528
2017-04-01	-496
2017-07-01	1519
2017-10-01	793
2018-01-01	2102