Quarterly Billions of US Dollars
1966-01-01 0.015
1968-01-01 0.110
1968-04-01 0.060
1968-07-01 0.020
1969-10-01 0.008
1972-07-01 0.027
1975-10-01 0.015
1977-01-01 0.025
1977-10-01 0.090
1978-07-01 0.278
1978-10-01 0.026
1979-01-01 0.081
1983-01-01 0.029
1983-04-01 0.079
1983-07-01 0.100
1983-10-01 0.200
1984-04-01 0.050
1984-07-01 0.025
1984-10-01 0.166
1985-01-01 0.400
1985-04-01 0.234
1985-07-01 0.316
1985-10-01 0.569
1986-01-01 0.395
1986-04-01 0.827
1986-07-01 0.462
1986-10-01 0.426
1987-01-01 0.485
1987-04-01 0.758
1987-07-01 0.881
1987-10-01 1.171
1988-01-01 0.631
1988-04-01 1.601
1988-07-01 0.380
1988-10-01 0.875
1989-01-01 1.382
1989-04-01 0.834
1989-07-01 1.804
1989-10-01 0.611
1990-01-01 1.343
1990-04-01 1.002
1990-07-01 1.864
1990-10-01 1.011
1991-01-01 3.070
1991-04-01 1.649
1991-07-01 0.611
1991-10-01 1.286
1992-01-01 2.496
1992-04-01 1.575
1992-07-01 1.976
1992-10-01 1.218
1993-01-01 1.674
1993-04-01 2.186
1993-07-01 3.223
1993-10-01 5.431
1994-01-01 3.831
1994-04-01 4.792
1994-07-01 3.130
1994-10-01 4.991
1995-01-01 4.873
1995-04-01 7.421
1995-07-01 7.551
1995-10-01 5.294
1996-01-01 12.920
1996-04-01 11.753
1996-07-01 9.611
1996-10-01 19.491
1997-01-01 16.342
1997-04-01 13.661
1997-07-01 24.725
1997-10-01 22.790
1998-01-01 18.869
1998-04-01 20.738
1998-07-01 17.064
1998-10-01 11.576
1999-01-01 22.431
1999-04-01 20.332
1999-07-01 14.453
1999-10-01 18.184
2000-01-01 29.034
2000-04-01 19.899
2000-07-01 36.074
2000-10-01 23.366
2001-01-01 40.077
2001-04-01 36.272
2001-07-01 25.475
2001-10-01 25.680
2002-01-01 25.862
2002-04-01 24.696
2002-07-01 20.247
2002-10-01 17.696
2003-01-01 21.595
2003-04-01 20.109
2003-07-01 21.194
2003-10-01 20.503
2004-01-01 24.475
2004-04-01 20.990
2004-07-01 24.731
2004-10-01 27.563
2005-01-01 24.471
2005-04-01 31.991
2005-07-01 43.945
2005-10-01 72.279
2006-01-01 77.678
2006-04-01 79.890
2006-07-01 110.197
2006-10-01 142.340
2007-01-01 129.148
2007-04-01 147.296
2007-07-01 65.702
2007-10-01 38.038
2008-01-01 30.837
2008-04-01 29.507
2008-07-01 23.686
2008-10-01 13.897
2009-01-01 16.630
2009-04-01 27.440
2009-07-01 22.008
2009-10-01 21.869
2010-01-01 19.496
2010-04-01 16.415
2010-07-01 24.348
2010-10-01 24.174
2011-01-01 29.452
2011-04-01 18.442
2011-07-01 14.960
2011-10-01 23.261
2012-01-01 42.678
2012-04-01 26.491
2012-07-01 25.386
2012-10-01 47.062
2013-01-01 33.903
2013-04-01 41.089
2013-07-01 29.808
2013-10-01 37.468
2014-01-01 33.353
2014-04-01 59.005
2014-07-01 32.079
2014-10-01 38.480
2015-01-01 36.283
2015-04-01 32.294