Quarterly Billions of US Dollars
1987-01-01 3.017
1987-04-01 3.331
1987-07-01 4.001
1987-10-01 4.270
1988-01-01 4.884
1988-04-01 4.350
1988-07-01 5.536
1988-10-01 5.301
1989-01-01 5.377
1989-04-01 5.347
1989-07-01 5.127
1989-10-01 4.545
1990-01-01 5.875
1990-04-01 5.710
1990-07-01 6.933
1990-10-01 6.514
1991-01-01 6.890
1991-04-01 6.891
1991-07-01 6.556
1991-10-01 7.031
1992-01-01 7.469
1992-04-01 7.505
1992-07-01 7.671
1992-10-01 6.384
1993-01-01 6.242
1993-04-01 6.235
1993-07-01 2.700
1993-10-01 2.797
1994-01-01 3.596
1994-04-01 3.609
1994-07-01 3.515
1994-10-01 2.145
1995-01-01 1.985
1995-04-01 2.385
1995-07-01 2.534
1995-10-01 2.614
1996-01-01 3.829
1996-04-01 4.515
1996-07-01 4.208
1996-10-01 4.204
1997-01-01 4.600
1997-04-01 6.325
1997-07-01 9.437
1997-10-01 10.102
1998-01-01 10.070
1998-04-01 10.969
1998-07-01 13.510
1998-10-01 17.160
1999-01-01 18.672
1999-04-01 21.125
1999-07-01 25.430
1999-10-01 25.320
2000-01-01 23.358
2000-04-01 27.885
2000-07-01 29.868
2000-10-01 31.938
2001-01-01 36.523
2001-04-01 34.252
2001-07-01 35.463
2001-10-01 35.644
2002-01-01 31.993
2002-04-01 36.941
2002-07-01 36.399
2002-10-01 40.273
2003-01-01 43.079
2003-04-01 42.608
2003-07-01 40.627
2003-10-01 45.712
2004-01-01 43.579
2004-04-01 49.352
2004-07-01 45.346
2004-10-01 45.924
2005-01-01 48.959
2005-04-01 46.366
2005-07-01 47.333
2005-10-01 49.322
2006-01-01 54.677
2006-04-01 64.912
2006-07-01 64.083
2006-10-01 64.641
2007-01-01 71.632
2007-04-01 75.410
2007-07-01 72.878
2007-10-01 66.365
2008-01-01 91.159
2008-04-01 84.203
2008-07-01 90.978
2008-10-01 85.702
2009-01-01 86.351
2009-04-01 85.596
2009-07-01 100.447
2009-10-01 86.607
2010-01-01 85.790
2010-04-01 68.339
2010-07-01 92.131
2010-10-01 91.660
2011-01-01 95.257
2011-04-01 100.881
2011-07-01 102.920
2011-10-01 103.770
2012-01-01 121.194
2012-04-01 112.381
2012-07-01 111.896
2012-10-01 110.348
2013-01-01 99.289
2013-04-01 105.892
2013-07-01 101.587
2013-10-01 84.832
2014-01-01 82.209
2014-04-01 87.974
2014-07-01 74.765
2014-10-01 66.718
2015-01-01 66.984
2015-04-01 63.662