Quarter	Billions of US Dollars
1994-04-01	0.15540
2001-04-01	-0.07694
2002-04-01	-0.07693
2010-04-01	0.60000
2010-10-01	-0.59976
2011-04-01	0.70771
2013-01-01	0.99976
2013-04-01	-0.74131