Quarterly Billions of US Dollars
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 0.098
1972-07-01 0.026
1972-10-01 0.040
1973-01-01 0.070
1974-01-01 0.178
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 0.183
1975-10-01 0.494
1976-01-01 0.922
1976-04-01 0.945
1976-07-01 0.509
1976-10-01 0.598
1977-01-01 0.452
1977-04-01 0.296
1977-07-01 0.227
1977-10-01 0.677
1978-01-01 0.412
1978-04-01 0.470
1978-07-01 0.362
1978-10-01 0.081
1979-01-01 0.388
1979-04-01 0.659
1979-07-01 0.545
1979-10-01 0.510
1980-01-01 0.318
1980-04-01 0.717
1980-07-01 0.327
1980-10-01 0.889
1981-01-01 1.110
1981-04-01 0.593
1981-07-01 0.418
1981-10-01 0.921
1982-01-01 2.606
1982-04-01 1.786
1982-07-01 1.746
1982-10-01 2.710
1983-01-01 1.893
1983-04-01 2.032
1983-07-01 1.609
1983-10-01 0.872
1984-01-01 2.235
1984-04-01 1.156
1984-07-01 2.508
1984-10-01 1.887
1985-01-01 3.574
1985-04-01 3.083
1985-07-01 2.132
1985-10-01 2.444
1986-01-01 2.723
1986-04-01 2.986
1986-07-01 3.552
1986-10-01 2.359
1987-01-01 3.254
1987-04-01 1.566
1987-07-01 0.964
1987-10-01 0.779
1988-01-01 3.753
1988-04-01 4.107
1988-07-01 3.881
1988-10-01 2.039
1989-01-01 2.631
1989-04-01 3.222
1989-07-01 2.356
1989-10-01 2.324
1990-01-01 3.718
1990-04-01 4.284
1990-07-01 3.010
1990-10-01 4.110
1991-01-01 4.953
1991-04-01 6.796
1991-07-01 6.401
1991-10-01 5.776
1992-01-01 9.013
1992-04-01 8.154
1992-07-01 6.221
1992-10-01 7.143
1993-01-01 11.845
1993-04-01 8.939
1993-07-01 9.905
1993-10-01 8.783
1994-01-01 9.904
1994-04-01 6.391
1994-07-01 4.938
1994-10-01 4.339
1995-01-01 4.909
1995-04-01 5.511
1995-07-01 4.295
1995-10-01 7.818
1996-01-01 6.827
1996-04-01 8.675
1996-07-01 8.747
1996-10-01 6.220
1997-01-01 10.405
1997-04-01 9.427
1997-07-01 4.672
1997-10-01 6.415
1998-01-01 14.755
1998-04-01 9.672
1998-07-01 6.629
1998-10-01 12.415
1999-01-01 24.603
1999-04-01 17.828
1999-07-01 10.811
1999-10-01 21.985
2000-01-01 17.760
2000-04-01 21.275
2000-07-01 17.058
2000-10-01 19.351
2001-01-01 40.319
2001-04-01 28.156
2001-07-01 19.844
2001-10-01 39.229
2002-01-01 25.540
2002-04-01 26.098
2002-07-01 21.402
2002-10-01 27.357
2003-01-01 49.170
2003-04-01 49.861
2003-07-01 32.397
2003-10-01 36.834
2004-01-01 41.036
2004-04-01 44.775
2004-07-01 38.603
2004-10-01 50.891
2005-01-01 54.341
2005-04-01 61.488
2005-07-01 26.242
2005-10-01 54.898
2006-01-01 49.429
2006-04-01 56.767
2006-07-01 50.526
2006-10-01 92.453
2007-01-01 66.230
2007-04-01 78.743
2007-07-01 35.368
2007-10-01 62.351
2008-01-01 53.931
2008-04-01 119.999
2008-07-01 58.221
2008-10-01 55.016
2009-01-01 95.195
2009-04-01 147.838
2009-07-01 81.599
2009-10-01 75.225
2010-01-01 106.090
2010-04-01 72.167
2010-07-01 72.271
2010-10-01 78.234
2011-01-01 112.666
2011-04-01 85.296
2011-07-01 46.602
2011-10-01 53.241
2012-01-01 89.296
2012-04-01 53.286
2012-07-01 43.561
2012-10-01 49.925
2013-01-01 63.004
2013-04-01 49.066
2013-07-01 52.716
2013-10-01 75.839
2014-01-01 97.331
2014-04-01 94.306
2014-07-01 69.078
2014-10-01 42.408
2015-01-01 68.583
2015-04-01 34.296