Quarter	Billions of US Dollars
1997-10-01	10
1998-04-01	-5
1998-10-01	-5
2014-04-01	2000
2014-07-01	20
2014-10-01	760
2015-04-01	10
2015-07-01	-20
2015-10-01	-20
2018-01-01	2000