Quarterly Billions of US Dollars
1987-01-01 6.288
1987-04-01 6.321
1987-07-01 6.149
1987-10-01 6.251
1988-01-01 6.274
1988-04-01 6.242
1988-07-01 6.347
1988-10-01 6.376
1989-01-01 6.806
1989-04-01 6.733
1989-07-01 6.690
1989-10-01 6.477
1990-01-01 6.528
1990-04-01 5.878
1990-07-01 6.490
1990-10-01 6.186
1991-01-01 6.734
1991-04-01 6.296
1991-07-01 6.199
1991-10-01 6.215
1992-01-01 5.487
1992-04-01 5.147
1992-07-01 4.981
1992-10-01 4.727
1993-01-01 4.602
1993-04-01 4.617
1993-07-01 5.868
1993-10-01 6.055
1994-01-01 5.994
1994-04-01 6.147
1994-07-01 6.706
1994-10-01 6.692
1995-01-01 6.967
1995-04-01 7.530
1995-07-01 7.605
1995-10-01 9.189
1996-01-01 6.268
1996-04-01 6.769
1996-07-01 7.601
1996-10-01 8.128
1997-01-01 9.093
1997-04-01 10.297
1997-07-01 10.011
1997-10-01 10.104
1998-01-01 9.890
1998-04-01 9.411
1998-07-01 9.929
1998-10-01 10.509
1999-01-01 12.589
1999-04-01 11.738
1999-07-01 13.934
1999-10-01 14.482
2000-01-01 12.431
2000-04-01 11.433
2000-07-01 11.859
2000-10-01 11.931
2001-01-01 11.728
2001-04-01 11.925
2001-07-01 12.067
2001-10-01 12.099
2002-01-01 13.369
2002-04-01 15.349
2002-07-01 17.197
2002-10-01 17.185
2003-01-01 18.159
2003-04-01 19.617
2003-07-01 19.048
2003-10-01 19.367
2004-01-01 19.661
2004-04-01 20.519
2004-07-01 20.813
2004-10-01 21.669
2005-01-01 22.271
2005-04-01 22.257
2005-07-01 21.882
2005-10-01 19.543
2006-01-01 20.749
2006-04-01 22.172
2006-07-01 22.336
2006-10-01 22.514
2007-01-01 22.258
2007-04-01 22.646
2007-07-01 22.718
2007-10-01 21.842
2008-01-01 21.558
2008-04-01 21.602
2008-07-01 20.819
2008-10-01 20.601
2009-01-01 20.157
2009-04-01 19.108
2009-07-01 18.973
2009-10-01 19.177
2010-01-01 22.108
2010-04-01 22.284
2010-07-01 25.162
2010-10-01 29.656
2011-01-01 31.171
2011-04-01 37.624
2011-07-01 38.632
2011-10-01 43.376
2012-01-01 49.308
2012-04-01 51.695
2012-07-01 57.433
2012-10-01 56.435
2013-01-01 59.186
2013-04-01 65.227
2013-07-01 66.510
2013-10-01 74.104
2014-01-01 79.646
2014-04-01 90.164
2014-07-01 94.594
2014-10-01 95.049
2015-01-01 100.461
2015-04-01 98.492