Quarterly Billions of US Dollars
1968-01-01 0.060
1968-04-01 0.060
1972-01-01 0.047
1972-04-01 0.103
1972-10-01 0.030
1973-01-01 0.037
1973-10-01 0.098
1974-01-01 0.043
1974-07-01 0.044
1974-10-01 0.023
1975-01-01 0.088
1975-04-01 0.069
1975-07-01 0.092
1975-10-01 0.029
1976-01-01 0.067
1976-04-01 0.109
1976-07-01 0.031
1976-10-01 0.099
1977-01-01 0.035
1977-04-01 0.342
1977-07-01 0.033
1977-10-01 0.011
1978-01-01 0.166
1978-04-01 0.202
1978-07-01 0.119
1978-10-01 0.100
1979-01-01 0.092
1979-04-01 0.125
1979-07-01 0.062
1980-04-01 0.025
1980-07-01 0.086
1980-10-01 0.108
1981-04-01 0.160
1981-07-01 0.092
1981-10-01 0.014
1982-01-01 0.232
1982-04-01 0.235
1982-07-01 0.523
1982-10-01 0.546
1983-01-01 1.218
1983-04-01 0.698
1983-07-01 0.092
1983-10-01 0.841
1984-01-01 0.988
1984-04-01 0.249
1984-07-01 0.440
1984-10-01 0.824
1985-01-01 0.447
1985-04-01 0.747
1985-07-01 0.943
1985-10-01 1.313
1986-01-01 1.978
1986-04-01 3.563
1986-07-01 2.375
1986-10-01 2.224
1987-01-01 4.154
1987-04-01 1.480
1987-07-01 2.885
1987-10-01 1.057
1988-01-01 3.127
1988-04-01 1.635
1988-07-01 2.938
1988-10-01 3.550
1989-01-01 1.378
1989-04-01 2.822
1989-07-01 2.298
1989-10-01 2.580
1990-01-01 3.310
1990-04-01 1.359
1990-07-01 2.297
1990-10-01 1.101
1991-01-01 2.853
1991-04-01 3.542
1991-07-01 3.880
1991-10-01 4.546
1992-01-01 5.541
1992-04-01 5.698
1992-07-01 4.939
1992-10-01 3.783
1993-01-01 13.474
1993-04-01 7.017
1993-07-01 8.351
1993-10-01 10.650
1994-01-01 15.464
1994-04-01 7.552
1994-07-01 10.675
1994-10-01 12.090
1995-01-01 15.737
1995-04-01 17.901
1995-07-01 16.457
1995-10-01 15.299
1996-01-01 26.234
1996-04-01 22.219
1996-07-01 20.390
1996-10-01 24.675
1997-01-01 37.012
1997-04-01 23.154
1997-07-01 22.259
1997-10-01 14.322
1998-01-01 35.823
1998-04-01 33.152
1998-07-01 21.848
1998-10-01 20.068
1999-01-01 47.568
1999-04-01 38.592
1999-07-01 47.153
1999-10-01 30.006
2000-01-01 51.728
2000-04-01 53.802
2000-07-01 41.109
2000-10-01 53.616
2001-01-01 74.588
2001-04-01 61.282
2001-07-01 53.027
2001-10-01 60.379
2002-01-01 68.190
2002-04-01 68.234
2002-07-01 51.271
2002-10-01 59.403
2003-01-01 83.902
2003-04-01 100.819
2003-07-01 72.731
2003-10-01 68.196
2004-01-01 122.973
2004-04-01 84.423
2004-07-01 97.325
2004-10-01 81.148
2005-01-01 128.720
2005-04-01 129.745
2005-07-01 70.951
2005-10-01 98.619
2006-01-01 126.885
2006-04-01 105.064
2006-07-01 105.996
2006-10-01 104.713
2007-01-01 113.933
2007-04-01 109.976
2007-07-01 78.511
2007-10-01 74.106
2008-01-01 112.316
2008-04-01 117.956
2008-07-01 65.689
2008-10-01 101.617
2009-01-01 135.302
2009-04-01 85.726
2009-07-01 71.365
2009-10-01 50.617
2010-01-01 103.691
2010-04-01 58.066
2010-07-01 71.927
2010-10-01 39.978
2011-01-01 108.898
2011-04-01 71.506
2011-07-01 77.604
2011-10-01 42.470
2012-01-01 136.263
2012-04-01 73.997
2012-07-01 67.570
2012-10-01 73.004
2013-01-01 87.450
2013-04-01 72.940
2013-07-01 66.360
2013-10-01 58.568
2014-01-01 95.191
2014-04-01 100.778
2014-07-01 67.183
2014-10-01 79.335
2015-01-01 89.434
2015-04-01 77.040