Quarterly Billions of US Dollars
1987-01-01 0.100
1987-04-01 0.100
1987-07-01 0.100
1987-10-01 0.100
1988-01-01 0.173
1988-04-01 0.166
1988-07-01 0.429
1988-10-01 0.447
1989-01-01 0.900
1989-04-01 0.888
1989-07-01 1.393
1989-10-01 1.525
1990-01-01 1.790
1990-04-01 1.796
1990-07-01 1.912
1990-10-01 1.991
1991-01-01 1.750
1991-04-01 1.662
1991-07-01 1.925
1991-10-01 2.087
1992-01-01 1.943
1992-04-01 2.073
1992-07-01 2.246
1992-10-01 1.989
1993-01-01 1.982
1993-04-01 1.813
1993-07-01 1.832
1993-10-01 1.727
1994-01-01 1.685
1994-04-01 1.764
1994-07-01 1.768
1994-10-01 1.765
1995-01-01 1.618
1995-04-01 1.616
1995-07-01 1.126
1995-10-01 1.149
1996-01-01 1.112
1996-04-01 1.124
1996-07-01 0.146
1996-10-01 0.145
1997-01-01 0.170
1997-04-01 0.275
1997-07-01 0.426
1997-10-01 0.588
1998-01-01 0.472
1998-04-01 0.386
1998-07-01 0.286
1998-10-01 0.223
1999-01-01 0.217
1999-04-01 0.212
1999-07-01 0.201
1999-10-01 0.201
2000-01-01 0.201
2000-04-01 0.201
2000-07-01 0.001
2000-10-01 0.001
2001-01-01 0.001
2001-04-01 0.101
2001-07-01 0.101
2001-10-01 0.101
2002-01-01 0.101
2002-04-01 0.101
2002-07-01 0.101
2002-10-01 0.226
2003-01-01 0.226
2003-04-01 0.701
2003-07-01 0.701
2003-10-01 2.051
2004-01-01 2.426
2004-04-01 2.801
2004-07-01 3.651
2004-10-01 4.801
2005-01-01 6.016
2005-04-01 8.009
2005-07-01 8.858
2005-10-01 10.332
2006-01-01 12.064
2006-04-01 14.488
2006-07-01 15.524
2006-10-01 20.494
2007-01-01 24.536
2007-04-01 31.149
2007-07-01 30.494
2007-10-01 35.232
2008-01-01 35.825
2008-04-01 42.865
2008-07-01 41.567
2008-10-01 39.924
2009-01-01 37.113
2009-04-01 38.115
2009-07-01 37.253
2009-10-01 34.809
2010-01-01 35.481
2010-04-01 32.523
2010-07-01 43.116
2010-10-01 51.731
2011-01-01 54.560
2011-04-01 58.341
2011-07-01 56.330
2011-10-01 55.494
2012-01-01 61.859
2012-04-01 67.864
2012-07-01 90.957
2012-10-01 100.231
2013-01-01 105.931
2013-04-01 103.883
2013-07-01 104.476
2013-10-01 109.112
2014-01-01 111.872
2014-04-01 110.314
2014-07-01 110.103
2014-10-01 107.533
2015-01-01 103.668
2015-04-01 103.652