Quarterly Billions of US Dollars
1968-04-01 0.015
1971-01-01 0.040
1971-04-01 0.040
1971-07-01 0.002
1971-10-01 0.002
1972-01-01 0.096
1972-04-01 0.126
1972-07-01 0.026
1972-10-01 0.060
1973-01-01 0.093
1973-04-01 0.075
1973-10-01 0.013
1974-01-01 0.155
1974-04-01 0.039
1974-07-01 0.233
1974-10-01 0.164
1975-01-01 0.703
1975-04-01 0.597
1975-07-01 0.177
1975-10-01 0.526
1976-01-01 0.862
1976-04-01 0.904
1976-07-01 0.569
1976-10-01 0.678
1977-01-01 0.495
1977-04-01 0.301
1977-07-01 0.227
1977-10-01 0.797
1978-01-01 0.417
1978-04-01 0.518
1978-07-01 0.391
1978-10-01 0.081
1979-01-01 0.524
1979-04-01 0.629
1979-07-01 0.523
1979-10-01 0.489
1980-01-01 0.355
1980-04-01 0.726
1980-07-01 0.496
1980-10-01 1.103
1981-01-01 1.115
1981-04-01 0.764
1981-07-01 0.508
1981-10-01 0.965
1982-01-01 2.631
1982-04-01 1.661
1982-07-01 1.794
1982-10-01 2.888
1983-01-01 1.797
1983-04-01 2.240
1983-07-01 1.720
1983-10-01 1.134
1984-01-01 2.153
1984-04-01 1.195
1984-07-01 2.610
1984-10-01 1.905
1985-01-01 3.416
1985-04-01 3.264
1985-07-01 2.158
1985-10-01 2.468
1986-01-01 2.956
1986-04-01 3.334
1986-07-01 3.915
1986-10-01 2.832
1987-01-01 4.132
1987-04-01 2.336
1987-07-01 1.078
1987-10-01 1.041
1988-01-01 4.687
1988-04-01 4.965
1988-07-01 4.834
1988-10-01 3.900
1989-01-01 4.225
1989-04-01 4.132
1989-07-01 2.341
1989-10-01 2.166
1990-01-01 4.472
1990-04-01 4.567
1990-07-01 3.474
1990-10-01 4.276
1991-01-01 5.113
1991-04-01 6.146
1991-07-01 5.275
1991-10-01 5.715
1992-01-01 7.254
1992-04-01 6.974
1992-07-01 5.580
1992-10-01 6.667
1993-01-01 10.686
1993-04-01 8.683
1993-07-01 8.889
1993-10-01 6.886
1994-01-01 8.542
1994-04-01 5.800
1994-07-01 5.594
1994-10-01 4.170
1995-01-01 4.968
1995-04-01 5.487
1995-07-01 4.606
1995-10-01 6.777
1996-01-01 6.906
1996-04-01 9.626
1996-07-01 6.645
1996-10-01 6.356
1997-01-01 8.952
1997-04-01 9.087
1997-07-01 4.716
1997-10-01 6.040
1998-01-01 12.797
1998-04-01 12.030
1998-07-01 10.024
1998-10-01 13.012
1999-01-01 22.331
1999-04-01 21.158
1999-07-01 13.108
1999-10-01 20.256
2000-01-01 19.485
2000-04-01 24.233
2000-07-01 18.590
2000-10-01 21.139
2001-01-01 42.540
2001-04-01 30.212
2001-07-01 21.688
2001-10-01 39.913
2002-01-01 27.418
2002-04-01 27.576
2002-07-01 21.206
2002-10-01 32.061
2003-01-01 48.094
2003-04-01 56.146
2003-07-01 42.766
2003-10-01 43.814
2004-01-01 47.217
2004-04-01 57.288
2004-07-01 48.545
2004-10-01 60.224
2005-01-01 64.250
2005-04-01 74.747
2005-07-01 34.366
2005-10-01 67.040
2006-01-01 64.573
2006-04-01 73.301
2006-07-01 74.191
2006-10-01 108.453
2007-01-01 78.596
2007-04-01 108.960
2007-07-01 51.967
2007-10-01 80.018
2008-01-01 56.823
2008-04-01 133.555
2008-07-01 72.709
2008-10-01 61.545
2009-01-01 84.113
2009-04-01 160.755
2009-07-01 73.350
2009-10-01 77.322
2010-01-01 88.473
2010-04-01 71.713
2010-07-01 72.854
2010-10-01 85.477
2011-01-01 122.902
2011-04-01 91.090
2011-07-01 53.409
2011-10-01 58.711
2012-01-01 107.448
2012-04-01 63.134
2012-07-01 54.086
2012-10-01 57.408
2013-01-01 77.059
2013-04-01 57.549
2013-07-01 61.034
2013-10-01 78.737
2014-01-01 101.749
2014-04-01 104.754
2014-07-01 65.943
2014-10-01 46.091
2015-01-01 69.062
2015-04-01 45.023