Quarterly Billions of US Dollars
1987-01-01 6.122
1987-04-01 6.429
1987-07-01 6.851
1987-10-01 7.427
1988-01-01 7.733
1988-04-01 8.660
1988-07-01 9.217
1988-10-01 10.031
1989-01-01 11.571
1989-04-01 12.409
1989-07-01 13.443
1989-10-01 14.622
1990-01-01 16.118
1990-04-01 16.967
1990-07-01 19.520
1990-10-01 19.631
1991-01-01 18.857
1991-04-01 18.759
1991-07-01 19.613
1991-10-01 18.699
1992-01-01 16.523
1992-04-01 17.433
1992-07-01 18.285
1992-10-01 16.269
1993-01-01 15.271
1993-04-01 14.659
1993-07-01 18.053
1993-10-01 18.321
1994-01-01 18.978
1994-04-01 18.232
1994-07-01 19.097
1994-10-01 19.222
1995-01-01 19.185
1995-04-01 18.308
1995-07-01 18.219
1995-10-01 18.360
1996-01-01 17.952
1996-04-01 17.588
1996-07-01 18.071
1996-10-01 17.554
1997-01-01 18.073
1997-04-01 17.978
1997-07-01 18.633
1997-10-01 19.345
1998-01-01 18.833
1998-04-01 20.455
1998-07-01 21.878
1998-10-01 21.407
1999-01-01 22.056
1999-04-01 24.354
1999-07-01 28.379
1999-10-01 27.057
2000-01-01 27.980
2000-04-01 27.795
2000-07-01 24.901
2000-10-01 27.534
2001-01-01 28.200
2001-04-01 27.456
2001-07-01 28.558
2001-10-01 27.919
2002-01-01 27.582
2002-04-01 30.739
2002-07-01 33.492
2002-10-01 35.547
2003-01-01 40.160
2003-04-01 40.605
2003-07-01 40.571
2003-10-01 45.591
2004-01-01 52.366
2004-04-01 54.894
2004-07-01 55.925
2004-10-01 65.112
2005-01-01 65.657
2005-04-01 70.295
2005-07-01 74.411
2005-10-01 71.864
2006-01-01 80.800
2006-04-01 84.322
2006-07-01 81.651
2006-10-01 91.455
2007-01-01 102.580
2007-04-01 114.847
2007-07-01 118.374
2007-10-01 124.257
2008-01-01 137.165
2008-04-01 159.988
2008-07-01 163.223
2008-10-01 148.681
2009-01-01 153.758
2009-04-01 177.236
2009-07-01 191.624
2009-10-01 189.750
2010-01-01 202.194
2010-04-01 186.249
2010-07-01 200.448
2010-10-01 197.128
2011-01-01 212.408
2011-04-01 226.877
2011-07-01 231.172
2011-10-01 220.454
2012-01-01 240.054
2012-04-01 240.467
2012-07-01 253.057
2012-10-01 245.342
2013-01-01 241.163
2013-04-01 248.844
2013-07-01 266.240
2013-10-01 257.799
2014-01-01 258.273
2014-04-01 254.025
2014-07-01 240.545
2014-10-01 230.283
2015-01-01 219.114
2015-04-01 228.714