Quarterly Billions of US Dollars
1987-01-01 8.989
1987-04-01 10.079
1987-07-01 11.303
1987-10-01 12.833
1988-01-01 12.125
1988-04-01 14.128
1988-07-01 14.822
1988-10-01 16.741
1989-01-01 18.643
1989-04-01 18.104
1989-07-01 20.540
1989-10-01 21.645
1990-01-01 23.092
1990-04-01 21.803
1990-07-01 22.541
1990-10-01 22.411
1991-01-01 23.207
1991-04-01 22.018
1991-07-01 22.895
1991-10-01 23.819
1992-01-01 22.787
1992-04-01 23.111
1992-07-01 23.662
1992-10-01 22.178
1993-01-01 22.343
1993-04-01 22.344
1993-07-01 20.512
1993-10-01 20.345
1994-01-01 21.636
1994-04-01 23.145
1994-07-01 22.660
1994-10-01 22.795
1995-01-01 23.540
1995-04-01 23.357
1995-07-01 24.492
1995-10-01 25.966
1996-01-01 28.606
1996-04-01 31.305
1996-07-01 33.028
1996-10-01 35.122
1997-01-01 36.018
1997-04-01 38.018
1997-07-01 37.236
1997-10-01 34.065
1998-01-01 36.660
1998-04-01 34.343
1998-07-01 36.281
1998-10-01 35.925
1999-01-01 39.222
1999-04-01 38.851
1999-07-01 42.697
1999-10-01 45.172
2000-01-01 49.169
2000-04-01 52.881
2000-07-01 53.174
2000-10-01 56.994
2001-01-01 53.099
2001-04-01 54.730
2001-07-01 56.887
2001-10-01 55.455
2002-01-01 55.920
2002-04-01 59.557
2002-07-01 62.575
2002-10-01 65.858
2003-01-01 69.277
2003-04-01 80.505
2003-07-01 87.689
2003-10-01 98.614
2004-01-01 105.954
2004-04-01 110.081
2004-07-01 124.049
2004-10-01 135.720
2005-01-01 139.286
2005-04-01 149.779
2005-07-01 146.040
2005-10-01 155.064
2006-01-01 175.756
2006-04-01 191.026
2006-07-01 198.872
2006-10-01 215.758
2007-01-01 216.971
2007-04-01 229.077
2007-07-01 244.811
2007-10-01 245.968
2008-01-01 297.120
2008-04-01 294.903
2008-07-01 269.958
2008-10-01 243.812
2009-01-01 229.680
2009-04-01 253.598
2009-07-01 268.756
2009-10-01 300.193
2010-01-01 305.291
2010-04-01 298.879
2010-07-01 317.864
2010-10-01 325.373
2011-01-01 326.391
2011-04-01 335.211
2011-07-01 322.046
2011-10-01 308.544
2012-01-01 319.384
2012-04-01 315.906
2012-07-01 343.470
2012-10-01 332.220
2013-01-01 331.831
2013-04-01 327.032
2013-07-01 337.128
2013-10-01 354.216
2014-01-01 358.387
2014-04-01 366.541
2014-07-01 350.788
2014-10-01 345.412
2015-01-01 336.101
2015-04-01 342.225