Quarterly Billions of US Dollars
1987-01-01 0.288
1987-04-01 0.435
1987-07-01 0.434
1987-10-01 0.475
1988-01-01 0.460
1988-04-01 0.437
1988-07-01 0.427
1988-10-01 0.440
1989-01-01 0.422
1989-04-01 0.418
1989-07-01 0.427
1989-10-01 0.394
1990-01-01 0.398
1990-04-01 0.405
1990-07-01 0.425
1990-10-01 0.433
1991-01-01 0.398
1991-04-01 0.509
1991-07-01 0.684
1991-10-01 0.705
1992-01-01 0.682
1992-04-01 0.703
1992-07-01 0.730
1992-10-01 0.688
1993-01-01 0.685
1993-04-01 0.827
1993-07-01 1.728
1993-10-01 3.522
1994-01-01 5.145
1994-04-01 5.719
1994-07-01 6.004
1994-10-01 8.034
1995-01-01 8.362
1995-04-01 8.419
1995-07-01 8.320
1995-10-01 8.574
1996-01-01 8.626
1996-04-01 9.405
1996-07-01 9.852
1996-10-01 10.422
1997-01-01 11.934
1997-04-01 13.885
1997-07-01 16.554
1997-10-01 16.320
1998-01-01 16.201
1998-04-01 16.237
1998-07-01 15.438
1998-10-01 14.406
1999-01-01 16.611
1999-04-01 16.921
1999-07-01 16.870
1999-10-01 16.208
2000-01-01 16.399
2000-04-01 15.804
2000-07-01 20.146
2000-10-01 20.179
2001-01-01 23.766
2001-04-01 24.587
2001-07-01 24.592
2001-10-01 24.235
2002-01-01 23.225
2002-04-01 22.937
2002-07-01 23.094
2002-10-01 23.041
2003-01-01 24.522
2003-04-01 25.824
2003-07-01 25.240
2003-10-01 30.514
2004-01-01 29.322
2004-04-01 29.335
2004-07-01 29.260
2004-10-01 30.872
2005-01-01 32.013
2005-04-01 33.102
2005-07-01 34.891
2005-10-01 35.650
2006-01-01 35.187
2006-04-01 36.153
2006-07-01 37.541
2006-10-01 40.369
2007-01-01 39.973
2007-04-01 42.474
2007-07-01 41.766
2007-10-01 42.511
2008-01-01 43.711
2008-04-01 46.127
2008-07-01 46.389
2008-10-01 44.871
2009-01-01 43.627
2009-04-01 44.584
2009-07-01 50.154
2009-10-01 52.365
2010-01-01 52.436
2010-04-01 51.417
2010-07-01 55.502
2010-10-01 57.539
2011-01-01 56.930
2011-04-01 58.397
2011-07-01 59.204
2011-10-01 58.901
2012-01-01 70.589
2012-04-01 77.488
2012-07-01 80.133
2012-10-01 83.593
2013-01-01 85.094
2013-04-01 89.489
2013-07-01 88.653
2013-10-01 89.381
2014-01-01 93.173
2014-04-01 93.596
2014-07-01 95.979
2014-10-01 100.162
2015-01-01 100.664
2015-04-01 101.248