Quarterly Billions of US Dollars
1987-01-01 0.757
1987-04-01 0.720
1987-07-01 0.704
1987-10-01 0.771
1988-01-01 1.110
1988-04-01 1.134
1988-07-01 1.430
1988-10-01 1.634
1989-01-01 2.088
1989-04-01 2.024
1989-07-01 2.546
1989-10-01 2.747
1990-01-01 2.940
1990-04-01 2.963
1990-07-01 3.162
1990-10-01 3.343
1991-01-01 3.023
1991-04-01 2.866
1991-07-01 3.177
1991-10-01 3.453
1992-01-01 3.365
1992-04-01 3.466
1992-07-01 3.705
1992-10-01 3.492
1993-01-01 3.556
1993-04-01 3.375
1993-07-01 3.420
1993-10-01 3.277
1994-01-01 3.107
1994-04-01 3.127
1994-07-01 3.149
1994-10-01 3.149
1995-01-01 3.012
1995-04-01 3.050
1995-07-01 2.433
1995-10-01 2.353
1996-01-01 2.259
1996-04-01 2.231
1996-07-01 1.093
1996-10-01 1.019
1997-01-01 1.201
1997-04-01 1.551
1997-07-01 1.786
1997-10-01 2.032
1998-01-01 1.880
1998-04-01 1.687
1998-07-01 1.857
1998-10-01 1.776
1999-01-01 1.744
1999-04-01 1.679
1999-07-01 1.687
1999-10-01 1.786
2000-01-01 2.113
2000-04-01 2.438
2000-07-01 1.976
2000-10-01 1.853
2001-01-01 1.860
2001-04-01 2.299
2001-07-01 2.360
2001-10-01 2.424
2002-01-01 2.292
2002-04-01 2.572
2002-07-01 2.473
2002-10-01 2.530
2003-01-01 2.482
2003-04-01 2.829
2003-07-01 2.837
2003-10-01 4.764
2004-01-01 5.411
2004-04-01 5.697
2004-07-01 6.856
2004-10-01 8.224
2005-01-01 9.395
2005-04-01 12.530
2005-07-01 14.003
2005-10-01 17.353
2006-01-01 20.799
2006-04-01 23.015
2006-07-01 26.185
2006-10-01 33.158
2007-01-01 37.392
2007-04-01 46.291
2007-07-01 46.620
2007-10-01 51.537
2008-01-01 54.547
2008-04-01 63.232
2008-07-01 61.980
2008-10-01 59.485
2009-01-01 55.276
2009-04-01 56.804
2009-07-01 56.931
2009-10-01 55.741
2010-01-01 54.258
2010-04-01 49.946
2010-07-01 63.699
2010-10-01 73.793
2011-01-01 78.150
2011-04-01 82.871
2011-07-01 79.928
2011-10-01 79.319
2012-01-01 86.117
2012-04-01 91.816
2012-07-01 118.904
2012-10-01 134.697
2013-01-01 143.465
2013-04-01 145.743
2013-07-01 147.772
2013-10-01 155.763
2014-01-01 158.993
2014-04-01 161.784
2014-07-01 163.696
2014-10-01 165.134
2015-01-01 162.065
2015-04-01 161.798