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 0.250
1972-01-01 0.373
1972-04-01 0.500
1972-07-01 0.103
1972-10-01 0.248
1973-01-01 0.142
1973-04-01 0.039
1973-07-01 0.167
1973-10-01 0.125
1974-01-01 0.065
1974-04-01 0.010
1974-07-01 0.009
1974-10-01 0.053
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 0.573
1977-07-01 0.502
1977-10-01 0.689
1978-01-01 0.303
1978-04-01 0.100
1978-07-01 0.431
1978-10-01 0.442
1979-01-01 0.720
1979-04-01 0.948
1979-07-01 0.327
1979-10-01 0.493
1980-01-01 0.373
1980-04-01 1.308
1980-07-01 1.271
1980-10-01 1.492
1981-01-01 1.301
1981-04-01 1.014
1981-07-01 1.605
1981-10-01 1.940
1982-01-01 4.251
1982-04-01 4.718
1982-07-01 3.873
1982-10-01 3.383
1983-01-01 2.779
1983-04-01 2.525
1983-07-01 1.770
1983-10-01 3.183
1984-01-01 3.935
1984-04-01 2.593
1984-07-01 2.091
1984-10-01 1.954
1985-01-01 0.848
1985-04-01 0.634
1985-07-01 1.112
1985-10-01 -0.248
1986-01-01 0.608
1986-04-01 1.048
1986-07-01 0.947
1986-10-01 0.756
1987-01-01 0.981
1987-04-01 1.583
1987-07-01 0.565
1987-10-01 0.353
1988-01-01 0.317
1988-04-01 0.660
1988-07-01 2.195
1988-10-01 0.988
1989-01-01 3.043
1989-04-01 1.983
1989-07-01 1.627
1989-10-01 1.267
1990-01-01 1.498
1990-04-01 -0.787
1990-07-01 5.464
1990-10-01 0.431
1991-01-01 3.156
1991-04-01 0.383
1991-07-01 0.701
1991-10-01 -0.171
1992-01-01 -3.696
1992-04-01 -1.427
1992-07-01 4.140
1992-10-01 0.250
1993-01-01 -1.210
1993-04-01 -2.958
1993-07-01 2.504
1993-10-01 5.383
1994-01-01 4.504
1994-04-01 3.757
1994-07-01 6.319
1994-10-01 9.240
1995-01-01 7.175
1995-04-01 9.237
1995-07-01 9.571
1995-10-01 7.516
1996-01-01 10.310
1996-04-01 12.747
1996-07-01 13.175
1996-10-01 25.136
1997-01-01 20.568
1997-04-01 15.852
1997-07-01 29.024
1997-10-01 23.113
1998-01-01 15.716
1998-04-01 26.898
1998-07-01 11.621
1998-10-01 1.853
1999-01-01 17.749
1999-04-01 20.658
1999-07-01 18.406
1999-10-01 8.971
2000-01-01 18.599
2000-04-01 11.943
2000-07-01 20.295
2000-10-01 22.781
2001-01-01 29.396
2001-04-01 29.680
2001-07-01 19.263
2001-10-01 19.910
2002-01-01 9.309
2002-04-01 22.147
2002-07-01 -1.202
2002-10-01 0.713
2003-01-01 1.240
2003-04-01 8.994
2003-07-01 4.074
2003-10-01 7.446
2004-01-01 2.260
2004-04-01 7.217
2004-07-01 6.917
2004-10-01 8.600
2005-01-01 5.573
2005-04-01 7.864
2005-07-01 11.030
2005-10-01 47.262
2006-01-01 46.512
2006-04-01 56.107
2006-07-01 80.976
2006-10-01 126.747
2007-01-01 91.142
2007-04-01 119.555
2007-07-01 66.303
2007-10-01 27.728
2008-01-01 7.040
2008-04-01 5.979
2008-07-01 2.435
2008-10-01 -10.693
2009-01-01 -5.954
2009-04-01 4.186
2009-07-01 0.381
2009-10-01 0.035
2010-01-01 1.688
2010-04-01 -7.172
2010-07-01 21.138
2010-10-01 15.490
2011-01-01 0.022
2011-04-01 10.286
2011-07-01 -4.195
2011-10-01 11.005
2012-01-01 35.640
2012-04-01 18.714
2012-07-01 32.302
2012-10-01 47.479
2013-01-01 20.180
2013-04-01 47.194
2013-07-01 6.908
2013-10-01 28.815
2014-01-01 27.806
2014-04-01 54.805
2014-07-01 47.219
2014-10-01 28.692
2015-01-01 33.143
2015-04-01 45.533