Quarterly Billions of US Dollars
1987-01-01 1.641
1987-04-01 1.421
1987-07-01 1.260
1987-10-01 1.200
1988-01-01 1.438
1988-04-01 1.495
1988-07-01 1.301
1988-10-01 1.379
1989-01-01 1.430
1989-04-01 1.570
1989-07-01 1.371
1989-10-01 1.071
1990-01-01 1.320
1990-04-01 1.263
1990-07-01 1.517
1990-10-01 2.139
1991-01-01 0.937
1991-04-01 1.008
1991-07-01 1.088
1991-10-01 1.591
1992-01-01 1.287
1992-04-01 1.426
1992-07-01 2.443
1992-10-01 2.623
1993-01-01 3.215
1993-04-01 4.428
1993-07-01 9.559
1993-10-01 9.577
1994-01-01 11.063
1994-04-01 11.334
1994-07-01 11.810
1994-10-01 10.420
1995-01-01 5.822
1995-04-01 6.873
1995-07-01 9.701
1995-10-01 11.119
1996-01-01 13.544
1996-04-01 16.885
1996-07-01 14.809
1996-10-01 16.096
1997-01-01 15.675
1997-04-01 14.775
1997-07-01 15.302
1997-10-01 11.146
1998-01-01 12.936
1998-04-01 13.261
1998-07-01 9.867
1998-10-01 7.128
1999-01-01 5.708
1999-04-01 6.227
1999-07-01 6.006
1999-10-01 6.467
2000-01-01 7.403
2000-04-01 7.250
2000-07-01 7.840
2000-10-01 9.121
2001-01-01 7.928
2001-04-01 8.026
2001-07-01 4.329
2001-10-01 3.832
2002-01-01 3.159
2002-04-01 3.171
2002-07-01 4.245
2002-10-01 4.689
2003-01-01 7.171
2003-04-01 6.878
2003-07-01 7.425
2003-10-01 6.860
2004-01-01 5.891
2004-04-01 5.196
2004-07-01 5.112
2004-10-01 6.403
2005-01-01 6.399
2005-04-01 7.161
2005-07-01 6.188
2005-10-01 7.350
2006-01-01 10.042
2006-04-01 11.344
2006-07-01 13.784
2006-10-01 14.501
2007-01-01 18.445
2007-04-01 19.939
2007-07-01 18.173
2007-10-01 18.960
2008-01-01 22.509
2008-04-01 24.811
2008-07-01 24.944
2008-10-01 13.959
2009-01-01 12.827
2009-04-01 14.472
2009-07-01 16.532
2009-10-01 14.895
2010-01-01 14.484
2010-04-01 14.462
2010-07-01 14.722
2010-10-01 13.188
2011-01-01 14.604
2011-04-01 19.066
2011-07-01 21.248
2011-10-01 25.051
2012-01-01 40.714
2012-04-01 47.053
2012-07-01 49.628
2012-10-01 55.828
2013-01-01 66.104
2013-04-01 73.764
2013-07-01 83.785
2013-10-01 90.055
2014-01-01 104.707
2014-04-01 118.363
2014-07-01 121.368
2014-10-01 120.005
2015-01-01 117.547
2015-04-01 117.893