Quarterly Billions of US Dollars
1987-01-01 2.947
1987-04-01 3.332
1987-07-01 3.450
1987-10-01 4.075
1988-01-01 3.619
1988-04-01 4.121
1988-07-01 4.382
1988-10-01 5.050
1989-01-01 4.966
1989-04-01 4.950
1989-07-01 5.780
1989-10-01 4.984
1990-01-01 4.568
1990-04-01 5.078
1990-07-01 6.378
1990-10-01 6.571
1991-01-01 7.952
1991-04-01 10.041
1991-07-01 9.637
1991-10-01 9.259
1992-01-01 9.391
1992-04-01 9.762
1992-07-01 11.062
1992-10-01 9.243
1993-01-01 6.775
1993-04-01 7.086
1993-07-01 6.152
1993-10-01 6.487
1994-01-01 5.692
1994-04-01 5.137
1994-07-01 4.551
1994-10-01 4.471
1995-01-01 5.034
1995-04-01 3.544
1995-07-01 3.506
1995-10-01 4.259
1996-01-01 3.750
1996-04-01 9.340
1996-07-01 8.374
1996-10-01 7.054
1997-01-01 8.558
1997-04-01 7.183
1997-07-01 8.232
1997-10-01 8.789
1998-01-01 9.479
1998-04-01 8.203
1998-07-01 11.036
1998-10-01 12.278
1999-01-01 11.094
1999-04-01 8.565
1999-07-01 9.323
1999-10-01 9.377
2000-01-01 9.494
2000-04-01 10.318
2000-07-01 11.240
2000-10-01 11.976
2001-01-01 13.326
2001-04-01 13.375
2001-07-01 12.326
2001-10-01 10.592
2002-01-01 12.198
2002-04-01 14.603
2002-07-01 12.279
2002-10-01 15.518
2003-01-01 15.255
2003-04-01 16.266
2003-07-01 19.299
2003-10-01 19.139
2004-01-01 23.513
2004-04-01 26.939
2004-07-01 34.638
2004-10-01 36.889
2005-01-01 41.698
2005-04-01 40.862
2005-07-01 43.348
2005-10-01 33.568
2006-01-01 34.675
2006-04-01 34.554
2006-07-01 28.734
2006-10-01 35.776
2007-01-01 37.006
2007-04-01 49.949
2007-07-01 45.388
2007-10-01 55.815
2008-01-01 70.379
2008-04-01 87.387
2008-07-01 81.768
2008-10-01 78.005
2009-01-01 79.495
2009-04-01 75.847
2009-07-01 65.911
2009-10-01 64.384
2010-01-01 72.042
2010-04-01 76.054
2010-07-01 80.638
2010-10-01 81.120
2011-01-01 103.376
2011-04-01 96.830
2011-07-01 88.688
2011-10-01 83.709
2012-01-01 86.541
2012-04-01 64.841
2012-07-01 72.749
2012-10-01 64.721
2013-01-01 68.598
2013-04-01 69.163
2013-07-01 73.970
2013-10-01 69.897
2014-01-01 82.742
2014-04-01 83.606
2014-07-01 87.920
2014-10-01 75.655
2015-01-01 78.421
2015-04-01 73.812