Quarterly Billions of US Dollars
1987-01-01 0.406
1987-04-01 0.405
1987-07-01 0.407
1987-10-01 0.609
1988-01-01 0.595
1988-04-01 0.553
1988-07-01 0.542
1988-10-01 0.568
1989-01-01 0.539
1989-04-01 0.364
1989-07-01 0.405
1989-10-01 0.429
1990-01-01 0.432
1990-04-01 0.439
1990-07-01 0.554
1990-10-01 0.566
1991-01-01 0.523
1991-04-01 0.506
1991-07-01 1.105
1991-10-01 1.133
1992-01-01 1.106
1992-04-01 1.130
1992-07-01 1.069
1992-10-01 1.054
1993-01-01 1.251
1993-04-01 1.241
1993-07-01 1.302
1993-10-01 1.312
1994-01-01 1.595
1994-04-01 1.667
1994-07-01 1.819
1994-10-01 1.616
1995-01-01 1.652
1995-04-01 1.762
1995-07-01 2.506
1995-10-01 2.755
1996-01-01 2.998
1996-04-01 3.752
1996-07-01 4.200
1996-10-01 4.548
1997-01-01 5.538
1997-04-01 5.775
1997-07-01 6.641
1997-10-01 6.078
1998-01-01 6.340
1998-04-01 8.455
1998-07-01 7.788
1998-10-01 8.104
1999-01-01 8.310
1999-04-01 8.219
1999-07-01 8.412
1999-10-01 8.698
2000-01-01 7.730
2000-04-01 7.544
2000-07-01 7.848
2000-10-01 7.236
2001-01-01 8.653
2001-04-01 8.606
2001-07-01 8.996
2001-10-01 9.958
2002-01-01 9.729
2002-04-01 10.235
2002-07-01 9.686
2002-10-01 9.817
2003-01-01 11.245
2003-04-01 13.404
2003-07-01 15.295
2003-10-01 21.052
2004-01-01 21.656
2004-04-01 21.679
2004-07-01 22.047
2004-10-01 23.386
2005-01-01 23.223
2005-04-01 22.075
2005-07-01 22.401
2005-10-01 22.638
2006-01-01 22.991
2006-04-01 23.076
2006-07-01 22.963
2006-10-01 24.832
2007-01-01 25.973
2007-04-01 27.759
2007-07-01 27.498
2007-10-01 31.048
2008-01-01 28.766
2008-04-01 29.789
2008-07-01 29.314
2008-10-01 29.198
2009-01-01 28.562
2009-04-01 28.090
2009-07-01 28.865
2009-10-01 28.561
2010-01-01 29.445
2010-04-01 28.158
2010-07-01 33.625
2010-10-01 35.106
2011-01-01 37.696
2011-04-01 41.787
2011-07-01 42.584
2011-10-01 41.695
2012-01-01 41.650
2012-04-01 50.264
2012-07-01 53.578
2012-10-01 57.223
2013-01-01 57.177
2013-04-01 67.147
2013-07-01 66.420
2013-10-01 76.219
2014-01-01 79.765
2014-04-01 93.043
2014-07-01 100.292
2014-10-01 110.010
2015-01-01 119.299
2015-04-01 144.158