Quarterly Billions of US Dollars
1971-01-01 0.025
1972-10-01 0.053
1973-01-01 0.030
1973-04-01 0.020
1973-07-01 0.072
1974-01-01 0.023
1974-04-01 0.059
1974-07-01 0.016
1974-10-01 0.036
1975-04-01 0.034
1975-10-01 0.038
1976-07-01 0.020
1977-01-01 0.030
1977-07-01 0.057
1978-04-01 0.083
1979-04-01 0.039
1979-07-01 0.031
1979-10-01 0.110
1980-01-01 0.116
1980-07-01 0.061
1980-10-01 0.147
1981-01-01 0.100
1981-04-01 0.100
1981-10-01 0.342
1982-01-01 0.300
1982-04-01 0.128
1982-07-01 0.165
1982-10-01 0.143
1983-01-01 0.182
1983-04-01 0.105
1983-07-01 0.057
1983-10-01 0.650
1984-01-01 0.137
1984-04-01 0.091
1984-07-01 0.349
1984-10-01 0.258
1985-01-01 0.509
1985-04-01 0.352
1985-07-01 0.338
1985-10-01 0.285
1986-01-01 0.388
1986-04-01 0.610
1986-07-01 0.928
1986-10-01 0.270
1987-01-01 0.113
1987-04-01 0.268
1987-07-01 0.027
1987-10-01 0.297
1988-01-01 0.392
1988-04-01 0.121
1988-07-01 0.161
1989-01-01 0.277
1989-04-01 0.262
1989-07-01 1.475
1989-10-01 0.296
1990-01-01 0.776
1990-04-01 0.297
1990-07-01 0.206
1990-10-01 0.152
1991-01-01 0.341
1991-04-01 0.642
1991-07-01 0.420
1991-10-01 0.200
1992-01-01 0.552
1992-07-01 0.581
1992-10-01 1.501
1993-01-01 1.531
1993-04-01 0.069
1993-07-01 0.150
1993-10-01 0.387
1994-01-01 0.099
1994-04-01 0.487
1994-07-01 0.267
1994-10-01 0.666
1995-01-01 1.116
1995-04-01 0.898
1995-07-01 1.396
1995-10-01 2.815
1996-01-01 1.596
1996-04-01 2.664
1996-07-01 3.864
1996-10-01 3.235
1997-01-01 5.936
1997-04-01 1.529
1997-07-01 2.730
1997-10-01 2.853
1998-01-01 1.604
1998-04-01 2.746
1998-07-01 1.865
1998-10-01 0.933
1999-01-01 2.741
1999-04-01 2.437
1999-07-01 6.110
1999-10-01 2.786
2000-01-01 3.235
2000-04-01 3.679
2000-07-01 3.107
2000-10-01 2.896
2001-01-01 7.737
2001-04-01 5.672
2001-07-01 2.442
2001-10-01 6.120
2002-01-01 5.238
2002-04-01 4.476
2002-07-01 6.311
2002-10-01 10.120
2003-01-01 12.051
2003-04-01 16.493
2003-07-01 16.680
2003-10-01 32.415
2004-01-01 23.778
2004-04-01 25.301
2004-07-01 28.666
2004-10-01 34.530
2005-01-01 38.071
2005-04-01 52.812
2005-07-01 28.222
2005-10-01 53.090
2006-01-01 52.803
2006-04-01 74.131
2006-07-01 83.470
2006-10-01 87.158
2007-01-01 77.887
2007-04-01 104.787
2007-07-01 77.081
2007-10-01 54.199
2008-01-01 61.503
2008-04-01 68.408
2008-07-01 39.359
2008-10-01 104.866
2009-01-01 58.854
2009-04-01 62.526
2009-07-01 65.673
2009-10-01 31.580
2010-01-01 55.275
2010-04-01 19.663
2010-07-01 32.802
2010-10-01 29.288
2011-01-01 14.784
2011-04-01 20.568
2011-07-01 11.927
2011-10-01 11.347
2012-01-01 24.483
2012-04-01 20.046
2012-07-01 18.390
2012-10-01 35.035
2013-01-01 32.001
2013-04-01 24.226
2013-07-01 22.568
2013-10-01 26.562
2014-01-01 21.691
2014-04-01 26.098
2014-07-01 21.838
2014-10-01 13.798
2015-01-01 24.483
2015-04-01 53.065