Quarterly Billions of US Dollars
1987-01-01 0.368
1987-04-01 0.515
1987-07-01 0.514
1987-10-01 0.555
1988-01-01 0.540
1988-04-01 0.517
1988-07-01 0.507
1988-10-01 0.520
1989-01-01 0.502
1989-04-01 0.498
1989-07-01 0.507
1989-10-01 0.444
1990-01-01 0.448
1990-04-01 0.455
1990-07-01 0.475
1990-10-01 0.483
1991-01-01 0.482
1991-04-01 0.593
1991-07-01 0.769
1991-10-01 0.792
1992-01-01 0.768
1992-04-01 0.790
1992-07-01 0.817
1992-10-01 0.774
1993-01-01 0.772
1993-04-01 0.914
1993-07-01 2.326
1993-10-01 4.322
1994-01-01 6.083
1994-04-01 6.708
1994-07-01 7.817
1994-10-01 9.851
1995-01-01 9.552
1995-04-01 9.462
1995-07-01 9.731
1995-10-01 10.449
1996-01-01 11.098
1996-04-01 12.834
1996-07-01 14.121
1996-10-01 16.853
1997-01-01 19.435
1997-04-01 22.882
1997-07-01 26.016
1997-10-01 25.764
1998-01-01 25.977
1998-04-01 28.807
1998-07-01 30.369
1998-10-01 30.688
1999-01-01 36.584
1999-04-01 36.833
1999-07-01 37.872
1999-10-01 39.335
2000-01-01 39.758
2000-04-01 41.639
2000-07-01 45.908
2000-10-01 48.313
2001-01-01 55.987
2001-04-01 59.651
2001-07-01 62.582
2001-10-01 62.423
2002-01-01 62.332
2002-04-01 63.768
2002-07-01 62.959
2002-10-01 66.419
2003-01-01 66.864
2003-04-01 69.293
2003-07-01 71.530
2003-10-01 80.120
2004-01-01 78.902
2004-04-01 81.412
2004-07-01 82.961
2004-10-01 90.703
2005-01-01 94.898
2005-04-01 101.954
2005-07-01 106.521
2005-10-01 109.407
2006-01-01 113.629
2006-04-01 121.342
2006-07-01 125.380
2006-10-01 134.877
2007-01-01 144.476
2007-04-01 152.045
2007-07-01 154.572
2007-10-01 156.706
2008-01-01 165.213
2008-04-01 166.457
2008-07-01 162.298
2008-10-01 156.223
2009-01-01 140.207
2009-04-01 152.975
2009-07-01 161.203
2009-10-01 164.586
2010-01-01 164.893
2010-04-01 157.208
2010-07-01 165.682
2010-10-01 163.972
2011-01-01 157.927
2011-04-01 160.743
2011-07-01 158.365
2011-10-01 157.564
2012-01-01 170.204
2012-04-01 175.825
2012-07-01 186.322
2012-10-01 199.415
2013-01-01 204.073
2013-04-01 204.034
2013-07-01 203.283
2013-10-01 201.158
2014-01-01 204.310
2014-04-01 202.672
2014-07-01 204.447
2014-10-01 204.852
2015-01-01 208.274
2015-04-01 213.571