Quarter	Billions of US Dollars
1974-10-01	0.00984
1975-01-01	0.00989
1975-04-01	0.00998
1975-07-01	0.00910
1975-10-01	0.02863
1976-01-01	0.02960
1976-04-01	0.03033
1976-07-01	0.03056
1976-10-01	0.03062
1977-01-01	0.02951
1977-04-01	0.03047
1977-07-01	0.03360
1977-10-01	0.03750
1978-01-01	0.04014
1978-04-01	0.05381
1978-07-01	0.06481
1978-10-01	0.06173
1979-01-01	0.05914
1979-04-01	0.06020
1979-07-01	0.06423
1979-10-01	0.08544
1980-01-01	0.07369
1980-04-01	0.08341
1980-07-01	0.08174
1980-10-01	0.07655
1981-01-01	0.08617
1981-04-01	0.08124
1981-07-01	0.08369
1981-10-01	0.09174
1982-01-01	0.08531
1982-04-01	0.09508
1982-07-01	0.09226
1982-10-01	0.10028
1983-01-01	0.12970
1983-04-01	0.12830
1983-07-01	0.12678
1983-10-01	0.12388
1984-01-01	0.12539
1984-04-01	0.14591
1984-07-01	0.13611
1984-10-01	0.13153
1985-01-01	0.12989
1985-04-01	0.13273
1985-07-01	0.15589
1985-10-01	0.16374
1986-01-01	0.15982
1986-04-01	0.17263
1986-07-01	0.18923
1986-10-01	0.19095
1987-01-01	0.20584
1987-04-01	0.18092
1987-07-01	0.17986
1987-10-01	0.21518
1988-01-01	0.20095
1988-04-01	0.24578
1988-07-01	0.26172
1988-10-01	0.30652
1989-01-01	0.23554
1989-04-01	0.19187
1989-07-01	0.19839
1989-10-01	0.19140
1990-01-01	0.19779
1990-04-01	0.20459
1990-07-01	0.22325
1990-10-01	0.18526
1991-01-01	0.16438
1991-04-01	0.15256
1991-07-01	0.16419
1991-10-01	0.14976
1992-01-01	0.13547
1992-04-01	0.14616
1992-07-01	0.16375
1992-10-01	0.13828
1993-01-01	0.13467
1993-04-01	0.12587
1993-07-01	0.20459
1993-10-01	0.19601
1994-01-01	0.20567
1994-04-01	0.21569
1994-07-01	0.22551
1994-10-01	0.22112
1995-01-01	0.25459
1995-04-01	0.25195
1995-07-01	0.25354
1995-10-01	0.21295
1996-01-01	0.20585
1996-04-01	0.19577
1996-07-01	0.07956
1996-10-01	0.07427
1997-01-01	0.06891
1997-04-01	0.06855
1997-07-01	0.06887
2002-01-01	0.03660
2002-04-01	0.06894
2002-07-01	0.07108
2002-10-01	0.11001
2003-01-01	0.12929
2003-04-01	0.14264
2003-07-01	0.14630
2003-10-01	0.15675
2004-01-01	0.16086
2004-04-01	0.16024
2004-07-01	0.16160
2004-10-01	0.17531
2005-01-01	0.17274
2005-04-01	0.16537
2005-07-01	0.16783
2005-10-01	0.16717
2006-01-01	0.17187
2006-04-01	0.39588
2006-07-01	0.39243
2006-10-01	0.40562
2007-01-01	0.40878
2007-04-01	0.61473
2007-07-01	0.64401
2007-10-01	0.61492
2008-01-01	0.68188
2008-04-01	1.00511
2008-07-01	0.92289
2008-10-01	0.94537
2009-01-01	0.93868
2009-04-01	1.25015
2009-07-01	1.27341
2009-10-01	1.26899
2010-01-01	1.06567
2010-04-01	1.23013
2010-07-01	1.35663
2010-10-01	1.40485
2011-01-01	1.44294
2011-04-01	1.25839
2011-07-01	1.16485
2011-10-01	1.11595
2012-01-01	1.16266
2012-04-01	0.52334
2012-07-01	0.80171
2012-10-01	0.81824
2013-01-01	1.10283
2013-04-01	1.11560
2013-07-01	1.15996
2013-10-01	1.40213
2014-01-01	1.41403
2014-04-01	1.06706
2014-07-01	0.99155
2014-10-01	0.96047
2015-01-01	0.97656
2015-04-01	1.23576