Quarter	Billions of US Dollars
1993-07-01	96.721
1993-10-01	108.065
1994-01-01	112.252
1994-04-01	155.014
1994-07-01	162.732
1994-10-01	169.668
1995-01-01	177.131
1995-04-01	180.277
1995-07-01	184.261
1995-10-01	187.696
1996-01-01	193.921
1996-04-01	198.303
1996-07-01	208.472
1996-10-01	214.611
1997-01-01	226.737
1997-04-01	240.753
1997-07-01	245.679
1997-10-01	246.904
1998-01-01	254.386
1998-04-01	270.566
1998-07-01	282.057
1998-10-01	262.317
1999-01-01	264.654
1999-04-01	278.087
1999-07-01	284.672
1999-10-01	293.787
2000-01-01	306.133
2000-04-01	310.811
2000-07-01	343.995
2000-10-01	346.244
2001-01-01	351.779
2001-04-01	347.450
2001-07-01	355.450
2001-10-01	348.188
2002-01-01	354.125
2002-04-01	362.908
2002-07-01	365.622
2002-10-01	369.703
2003-01-01	371.516
2003-04-01	376.618
2003-07-01	382.967
2003-10-01	394.890
2004-01-01	401.271
2004-04-01	406.533
2004-07-01	412.315
2004-10-01	432.891
2005-01-01	440.645
2005-04-01	416.299
2005-07-01	413.021
2005-10-01	418.835
2006-01-01	436.310
2006-04-01	422.564
2006-07-01	426.753
2006-10-01	437.859
2007-01-01	446.075
2007-04-01	448.489
2007-07-01	453.463
2007-10-01	462.431
2008-01-01	466.949
2008-04-01	478.737
2008-07-01	461.275
2008-10-01	448.998
2009-01-01	450.350
2009-04-01	469.038
2009-07-01	484.770
2009-10-01	503.711
2010-01-01	506.462
2010-04-01	510.039
2010-07-01	539.924
2010-10-01	549.711
2011-01-01	569.688
2011-04-01	583.865
2011-07-01	584.439
2011-10-01	589.838
2012-01-01	613.845
2012-04-01	631.494
2012-07-01	648.214
2012-10-01	668.739
2013-01-01	664.454
2013-04-01	671.663
2013-07-01	696.985
2013-10-01	730.848
2014-01-01	731.723
2014-04-01	741.623
2014-07-01	740.444
2014-10-01	740.942
2015-01-01	740.975
2015-04-01	749.907