Quarterly Billions of US Dollars
1987-01-01 0.0590
1987-04-01 0.0970
1987-07-01 0.1070
1987-10-01 0.0470
1988-01-01 0.1000
1988-04-01 0.1360
1988-07-01 0.0770
1988-10-01 0.0460
1989-01-01 0.1080
1989-04-01 0.1140
1989-07-01 0.0980
1989-10-01 0.0640
1990-01-01 0.0530
1990-04-01 0.0840
1990-07-01 0.0650
1990-10-01 0.0730
1991-01-01 0.0700
1991-04-01 0.0650
1991-07-01 0.0480
1991-10-01 0.0450
1992-01-01 0.0550
1992-04-01 0.0450
1992-07-01 0.0350
1992-10-01 0.0150
1993-01-01 0.0100
1993-04-01 0.0100
1993-07-01 0.0150
1993-10-01 0.0100
1996-10-01 0.0300
1997-01-01 0.0300
1997-04-01 0.0300
1997-07-01 0.0300
1997-10-01 0.0300
1998-01-01 0.1050
1998-04-01 0.1050
1998-07-01 0.1050
1998-10-01 0.1050
1999-01-01 0.2650
1999-04-01 0.4090
1999-07-01 0.7224
1999-10-01 0.9008
2000-01-01 1.0764
2000-04-01 1.6035
2000-07-01 1.6320
2000-10-01 2.0220
2001-01-01 2.0481
2001-04-01 2.0312
2001-07-01 2.0765
2001-10-01 2.1554
2002-01-01 2.1706
2002-04-01 2.6485
2002-07-01 2.7046
2002-10-01 2.5918
2003-01-01 2.9712
2003-04-01 3.9589
2003-07-01 4.9928
2003-10-01 6.8785
2004-01-01 8.3563
2004-04-01 9.4111
2004-07-01 11.6354
2004-10-01 16.1034
2005-01-01 18.7874
2005-04-01 22.4329
2005-07-01 26.0681
2005-10-01 30.0151
2006-01-01 32.7219
2006-04-01 35.0889
2006-07-01 37.3333
2006-10-01 42.3158
2007-01-01 44.4801
2007-04-01 46.7630
2007-07-01 47.7950
2007-10-01 49.9972
2008-01-01 53.1434
2008-04-01 53.8412
2008-07-01 48.2884
2008-10-01 44.9475
2009-01-01 40.5611
2009-04-01 38.9661
2009-07-01 38.2010
2009-10-01 34.8299
2010-01-01 30.4435
2010-04-01 26.4005
2010-07-01 27.8058
2010-10-01 24.9389
2011-01-01 24.5958
2011-04-01 22.6629
2011-07-01 19.8832
2011-10-01 17.3401
2012-01-01 15.3443
2012-04-01 13.1634
2012-07-01 11.3462
2012-10-01 10.8391
2013-01-01 10.6085
2013-04-01 10.5525
2013-07-01 10.4150
2013-10-01 10.2988
2014-01-01 10.3573
2014-04-01 10.0379
2014-07-01 9.6027
2014-10-01 9.1906
2015-01-01 8.6354
2015-04-01 8.7676