Quarterly Billions of US Dollars
1987-01-01 0.981
1987-04-01 1.275
1987-07-01 1.395
1987-10-01 1.536
1988-01-01 1.690
1988-04-01 1.720
1988-07-01 2.055
1988-10-01 2.158
1989-01-01 2.742
1989-04-01 2.996
1989-07-01 3.212
1989-10-01 4.554
1990-01-01 5.389
1990-04-01 6.078
1990-07-01 6.942
1990-10-01 8.100
1991-01-01 8.956
1991-04-01 10.256
1991-07-01 11.764
1991-10-01 14.556
1992-01-01 15.933
1992-04-01 18.353
1992-07-01 19.669
1992-10-01 18.727
1993-01-01 19.554
1993-04-01 19.964
1993-07-01 27.324
1993-10-01 28.617
1994-01-01 30.220
1994-04-01 31.238
1994-07-01 34.006
1994-10-01 35.132
1995-01-01 38.778
1995-04-01 41.065
1995-07-01 43.207
1995-10-01 46.786
1996-01-01 48.241
1996-04-01 49.813
1996-07-01 52.404
1996-10-01 55.261
1997-01-01 55.131
1997-04-01 56.398
1997-07-01 59.361
1997-10-01 58.339
1998-01-01 59.987
1998-04-01 60.967
1998-07-01 63.640
1998-10-01 64.484
1999-01-01 63.785
1999-04-01 63.307
1999-07-01 67.520
1999-10-01 67.397
2000-01-01 68.688
2000-04-01 71.921
2000-07-01 67.119
2000-10-01 72.234
2001-01-01 72.674
2001-04-01 72.961
2001-07-01 76.250
2001-10-01 71.995
2002-01-01 72.900
2002-04-01 84.608
2002-07-01 85.273
2002-10-01 89.284
2003-01-01 99.436
2003-04-01 103.778
2003-07-01 105.416
2003-10-01 116.502
2004-01-01 117.830
2004-04-01 111.380
2004-07-01 122.324
2004-10-01 136.133
2005-01-01 130.044
2005-04-01 127.595
2005-07-01 133.057
2005-10-01 131.879
2006-01-01 145.683
2006-04-01 152.197
2006-07-01 155.006
2006-10-01 174.247
2007-01-01 188.780
2007-04-01 195.495
2007-07-01 206.492
2007-10-01 222.675
2008-01-01 239.191
2008-04-01 251.211
2008-07-01 225.510
2008-10-01 207.984
2009-01-01 212.143
2009-04-01 231.203
2009-07-01 240.319
2009-10-01 234.794
2010-01-01 239.338
2010-04-01 225.311
2010-07-01 247.444
2010-10-01 237.817
2011-01-01 241.166
2011-04-01 241.263
2011-07-01 219.174
2011-10-01 198.058
2012-01-01 192.785
2012-04-01 177.066
2012-07-01 180.688
2012-10-01 179.139
2013-01-01 155.296
2013-04-01 147.426
2013-07-01 157.077
2013-10-01 190.319
2014-01-01 165.216
2014-04-01 155.241
2014-07-01 146.241
2014-10-01 143.940
2015-01-01 142.702
2015-04-01 145.133