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 6.471
1993-10-01 6.088
1994-01-01 5.973
1994-04-01 6.623
1994-07-01 5.337
1994-10-01 4.375
1995-01-01 4.049
1995-04-01 4.767
1995-07-01 4.921
1995-10-01 3.449
1996-01-01 3.212
1996-04-01 3.408
1996-07-01 3.337
1996-10-01 3.297
1997-01-01 4.135
1997-04-01 6.239
1997-07-01 7.835
1997-10-01 7.052
1998-01-01 6.120
1998-04-01 7.131
1998-07-01 9.425
1998-10-01 14.402
1999-01-01 17.755
1999-04-01 20.512
1999-07-01 23.767
1999-10-01 24.831
2000-01-01 25.921
2000-04-01 33.350
2000-07-01 33.896
2000-10-01 41.998
2001-01-01 40.756
2001-04-01 38.910
2001-07-01 40.799
2001-10-01 41.608
2002-01-01 36.652
2002-04-01 39.689
2002-07-01 40.486
2002-10-01 45.647
2003-01-01 44.131
2003-04-01 41.026
2003-07-01 40.290
2003-10-01 49.580
2004-01-01 52.012
2004-04-01 52.998
2004-07-01 49.350
2004-10-01 49.705
2005-01-01 49.082
2005-04-01 44.032
2005-07-01 35.771
2005-10-01 37.302
2006-01-01 39.711
2006-04-01 49.147
2006-07-01 45.479
2006-10-01 44.603
2007-01-01 53.060
2007-04-01 59.305
2007-07-01 62.134
2007-10-01 65.660
2008-01-01 81.392
2008-04-01 82.025
2008-07-01 89.751
2008-10-01 92.488
2009-01-01 91.744
2009-04-01 87.380
2009-07-01 97.879
2009-10-01 87.405
2010-01-01 89.119
2010-04-01 76.466
2010-07-01 101.004
2010-10-01 102.655
2011-01-01 108.212
2011-04-01 111.741
2011-07-01 114.561
2011-10-01 114.146
2012-01-01 132.559
2012-04-01 121.865
2012-07-01 115.585
2012-10-01 118.003
2013-01-01 111.781
2013-04-01 114.511
2013-07-01 109.596
2013-10-01 90.807
2014-01-01 90.988
2014-04-01 100.164
2014-07-01 86.375
2014-10-01 74.146
2015-01-01 75.307
2015-04-01 72.729