Quarterly Billions of US Dollars
1966-01-01 0.015
1968-01-01 0.110
1968-04-01 0.145
1968-07-01 0.070
1968-10-01 0.028
1969-01-01 0.090
1969-10-01 0.008
1970-04-01 0.015
1970-10-01 0.020
1971-01-01 0.240
1971-04-01 0.095
1971-07-01 0.110
1971-10-01 0.270
1972-01-01 0.353
1972-04-01 0.500
1972-07-01 0.103
1972-10-01 0.257
1973-01-01 0.146
1973-04-01 0.025
1973-07-01 0.167
1973-10-01 0.125
1974-01-01 0.065
1974-04-01 0.010
1974-07-01 0.021
1974-10-01 0.042
1975-01-01 0.046
1975-04-01 0.157
1975-07-01 0.051
1975-10-01 0.104
1976-01-01 0.249
1976-04-01 0.055
1976-07-01 0.265
1976-10-01 0.311
1977-01-01 0.689
1977-04-01 0.608
1977-07-01 0.467
1977-10-01 0.689
1978-01-01 0.303
1978-04-01 0.100
1978-07-01 0.478
1978-10-01 0.454
1979-01-01 0.720
1979-04-01 0.948
1979-07-01 0.327
1979-10-01 0.590
1980-01-01 0.373
1980-04-01 1.580
1980-07-01 1.281
1980-10-01 1.397
1981-01-01 1.376
1981-04-01 1.165
1981-07-01 1.522
1981-10-01 2.040
1982-01-01 4.500
1982-04-01 4.431
1982-07-01 4.061
1982-10-01 3.229
1983-01-01 2.956
1983-04-01 2.392
1983-07-01 1.931
1983-10-01 3.227
1984-01-01 4.473
1984-04-01 3.467
1984-07-01 2.063
1984-10-01 2.590
1985-01-01 1.308
1985-04-01 1.627
1985-07-01 1.904
1985-10-01 3.158
1986-01-01 2.438
1986-04-01 4.091
1986-07-01 3.429
1986-10-01 3.743
1987-01-01 4.031
1987-04-01 3.233
1987-07-01 2.208
1987-10-01 2.670
1988-01-01 2.572
1988-04-01 3.282
1988-07-01 2.288
1988-10-01 2.957
1989-01-01 4.749
1989-04-01 2.540
1989-07-01 3.796
1989-10-01 3.346
1990-01-01 3.760
1990-04-01 2.761
1990-07-01 6.799
1990-10-01 2.743
1991-01-01 5.921
1991-04-01 3.373
1991-07-01 2.851
1991-10-01 3.048
1992-01-01 5.705
1992-04-01 2.916
1992-07-01 6.967
1992-10-01 2.257
1993-01-01 6.318
1993-04-01 4.429
1993-07-01 6.490
1993-10-01 11.742
1994-01-01 8.659
1994-04-01 8.447
1994-07-01 10.029
1994-10-01 10.767
1995-01-01 12.187
1995-04-01 12.384
1995-07-01 17.165
1995-10-01 11.781
1996-01-01 25.105
1996-04-01 19.455
1996-07-01 23.301
1996-10-01 30.788
1997-01-01 30.782
1997-04-01 24.473
1997-07-01 36.705
1997-10-01 29.218
1998-01-01 29.449
1998-04-01 30.128
1998-07-01 22.060
1998-10-01 17.885
1999-01-01 33.593
1999-04-01 27.545
1999-07-01 28.698
1999-10-01 26.614
2000-01-01 36.210
2000-04-01 29.144
2000-07-01 43.001
2000-10-01 34.692
2001-01-01 55.228
2001-04-01 51.370
2001-07-01 34.809
2001-10-01 40.605
2002-01-01 38.012
2002-04-01 38.579
2002-07-01 27.688
2002-10-01 30.243
2003-01-01 33.164
2003-04-01 34.965
2003-07-01 36.453
2003-10-01 41.352
2004-01-01 37.951
2004-04-01 40.224
2004-07-01 43.831
2004-10-01 49.395
2005-01-01 48.623
2005-04-01 47.051
2005-07-01 59.372
2005-10-01 90.561
2006-01-01 90.677
2006-04-01 103.326
2006-07-01 119.804
2006-10-01 156.657
2007-01-01 148.433
2007-04-01 180.056
2007-07-01 80.370
2007-10-01 55.863
2008-01-01 42.137
2008-04-01 48.987
2008-07-01 34.672
2008-10-01 19.217
2009-01-01 30.499
2009-04-01 39.655
2009-07-01 34.282
2009-10-01 37.069
2010-01-01 34.162
2010-04-01 27.362
2010-07-01 46.552
2010-10-01 45.340
2011-01-01 50.566
2011-04-01 48.048
2011-07-01 29.372
2011-10-01 42.468
2012-01-01 80.423
2012-04-01 56.603
2012-07-01 53.486
2012-10-01 75.795
2013-01-01 58.837
2013-04-01 82.640
2013-07-01 45.792
2013-10-01 62.847
2014-01-01 60.578
2014-04-01 107.134
2014-07-01 73.115
2014-10-01 65.757
2015-01-01 72.200
2015-04-01 79.828