Quarter	Billions of US Dollars
1993-07-01	0.081000
1993-10-01	0.016000
1994-01-01	0.074500
1994-04-01	0.041500
1994-07-01	0.010000
1995-01-01	0.007500
1995-07-01	0.005000
2005-04-01	0.025000
2006-07-01	0.015431
2007-01-01	0.019980
2010-07-01	0.025798
2012-01-01	0.012887