Quarter	Billions of US Dollars
1993-07-01	32.1074
1993-10-01	33.0831
1994-01-01	36.8387
1994-04-01	44.3330
1994-07-01	48.9094
1994-10-01	50.3829
1995-01-01	53.5673
1995-04-01	57.2707
1995-07-01	57.7372
1995-10-01	55.5487
1996-01-01	55.9319
1996-04-01	60.3213
1996-07-01	57.2990
1996-10-01	56.1049
1997-01-01	52.1690
1997-04-01	53.6913
1997-07-01	52.5485
1997-10-01	47.5484
1998-01-01	43.8924
1998-04-01	45.1537
1998-07-01	44.8730
1998-10-01	42.7541
1999-01-01	35.3647
1999-04-01	32.0608
1999-07-01	31.8413
1999-10-01	29.5915
2000-01-01	26.5361
2000-04-01	25.2449
2000-07-01	22.2380
2000-10-01	21.4377
2001-01-01	19.2302
2001-04-01	18.7002
2001-07-01	18.0846
2001-10-01	17.1357
2002-01-01	16.9245
2002-04-01	19.2172
2002-07-01	17.9647
2002-10-01	18.8830
2003-01-01	17.3375
2003-04-01	16.8623
2003-07-01	17.1100
2003-10-01	17.4051
2004-01-01	16.3991
2004-04-01	15.9791
2004-07-01	15.9589
2004-10-01	17.0514
2005-01-01	18.4571
2005-04-01	17.3852
2005-07-01	17.2973
2005-10-01	16.4143
2006-01-01	17.3299
2006-04-01	18.3368
2006-07-01	18.1410
2006-10-01	18.7414
2007-01-01	17.8553
2007-04-01	19.5556
2007-07-01	18.5842
2007-10-01	20.7587
2008-01-01	17.6827
2008-04-01	17.3551
2008-07-01	15.8296
2008-10-01	14.5105
2009-01-01	18.7422
2009-04-01	28.4541
2009-07-01	34.0349
2009-10-01	33.8351
2010-01-01	35.6759
2010-04-01	28.7753
2010-07-01	30.8981
2010-10-01	38.4168
2011-01-01	34.8309
2011-04-01	34.5859
2011-07-01	31.2906
2011-10-01	35.0316
2012-01-01	32.2006
2012-04-01	33.4847
2012-07-01	34.2406
2012-10-01	45.7170
2013-01-01	55.7996
2013-04-01	53.8660
2013-07-01	58.5486
2013-10-01	59.7911
2014-01-01	60.2632
2014-04-01	64.2581
2014-07-01	65.1219
2014-10-01	74.2403
2015-01-01	66.7954
2015-04-01	59.8688