Quarter	Billions of US Dollars
1994-01-01	46
1994-04-01	302
1994-07-01	318
1994-10-01	318
1995-01-01	291
1995-04-01	318
1995-07-01	344
1995-10-01	308
1996-01-01	295
1996-04-01	273
1996-07-01	46
1996-10-01	296
1997-01-01	304
1997-04-01	335
1997-07-01	297
1997-10-01	247
1998-01-01	235
1998-04-01	240
1998-07-01	239
1998-10-01	184
1999-01-01	217
1999-04-01	193
1999-07-01	192
1999-10-01	198
2000-01-01	191
2000-04-01	151
2000-07-01	162
2000-10-01	94
2001-01-01	166
2001-04-01	469
2001-07-01	435
2001-10-01	401
2002-01-01	422
2002-04-01	130
2002-07-01	197
2002-10-01	36
2003-01-01	0
2003-04-01	0
2003-07-01	117
2003-10-01	242
2004-01-01	269
2004-04-01	450
2004-07-01	149
2004-10-01	272
2005-01-01	337
2005-04-01	416
2005-07-01	405
2005-10-01	330
2006-01-01	339
2006-04-01	0
2006-07-01	0
2006-10-01	0
2007-01-01	0
2007-04-01	0
2007-07-01	490
2007-10-01	509
2008-01-01	546
2008-04-01	545
2008-07-01	286
2008-10-01	529
2009-01-01	156
2009-04-01	613
2009-07-01	416
2009-10-01	905
2010-01-01	354
2010-04-01	647
2010-07-01	577
2010-10-01	327
2011-01-01	1302
2011-04-01	1653
2011-07-01	1619
2011-10-01	1761
2012-01-01	781
2012-04-01	1969
2012-07-01	0
2012-10-01	1979
2013-01-01	1927
2013-04-01	386
2013-07-01	959
2013-10-01	761
2014-01-01	827
2014-04-01	936
2014-07-01	0
2014-10-01	1263
2015-01-01	1232
2015-04-01	1281
2015-07-01	1283
2015-10-01	158
2016-01-01	0
2016-04-01	0
2016-07-01	0
2016-10-01	0
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	0
2018-01-01	0
2018-04-01	232