Quarterly Billions of US Dollars
1987-01-01 8.017
1987-04-01 8.578
1987-07-01 9.157
1987-10-01 9.754
1988-01-01 9.910
1988-04-01 10.567
1988-07-01 11.474
1988-10-01 12.596
1989-01-01 13.055
1989-04-01 13.430
1989-07-01 14.423
1989-10-01 15.027
1990-01-01 15.069
1990-04-01 15.053
1990-07-01 15.314
1990-10-01 15.219
1991-01-01 14.117
1991-04-01 13.768
1991-07-01 13.517
1991-10-01 13.461
1992-01-01 12.833
1992-04-01 12.942
1992-07-01 12.875
1992-10-01 11.514
1993-01-01 11.912
1993-04-01 10.737
1993-07-01 12.211
1993-10-01 12.173
1994-01-01 12.305
1994-04-01 13.170
1994-07-01 12.825
1994-10-01 12.353
1995-01-01 12.607
1995-04-01 12.813
1995-07-01 12.720
1995-10-01 13.457
1996-01-01 12.903
1996-04-01 14.507
1996-07-01 15.081
1996-10-01 14.883
1997-01-01 15.626
1997-04-01 17.551
1997-07-01 17.781
1997-10-01 17.912
1998-01-01 18.777
1998-04-01 20.440
1998-07-01 20.000
1998-10-01 19.946
1999-01-01 21.150
1999-04-01 24.519
1999-07-01 23.734
1999-10-01 24.736
2000-01-01 26.602
2000-04-01 25.552
2000-07-01 25.211
2000-10-01 25.976
2001-01-01 25.354
2001-04-01 26.081
2001-07-01 26.088
2001-10-01 28.092
2002-01-01 31.889
2002-04-01 39.588
2002-07-01 44.864
2002-10-01 48.707
2003-01-01 51.585
2003-04-01 60.153
2003-07-01 66.000
2003-10-01 77.792
2004-01-01 79.427
2004-04-01 74.566
2004-07-01 82.309
2004-10-01 89.922
2005-01-01 89.057
2005-04-01 90.659
2005-07-01 95.518
2005-10-01 100.240
2006-01-01 106.656
2006-04-01 111.810
2006-07-01 118.185
2006-10-01 123.849
2007-01-01 127.254
2007-04-01 144.901
2007-07-01 154.587
2007-10-01 165.748
2008-01-01 167.405
2008-04-01 188.092
2008-07-01 180.221
2008-10-01 159.869
2009-01-01 166.978
2009-04-01 193.536
2009-07-01 207.569
2009-10-01 226.263
2010-01-01 230.364
2010-04-01 230.737
2010-07-01 240.111
2010-10-01 254.705
2011-01-01 260.640
2011-04-01 278.394
2011-07-01 251.900
2011-10-01 257.235
2012-01-01 268.234
2012-04-01 246.017
2012-07-01 255.384
2012-10-01 242.437
2013-01-01 241.876
2013-04-01 215.413
2013-07-01 228.478
2013-10-01 225.097
2014-01-01 212.039
2014-04-01 213.499
2014-07-01 198.608
2014-10-01 185.918
2015-01-01 172.421
2015-04-01 171.001