Quarterly Billions of US Dollars
1987-01-01 3.844
1987-04-01 4.029
1987-07-01 3.995
1987-10-01 4.007
1988-01-01 3.888
1988-04-01 3.778
1988-07-01 3.815
1988-10-01 3.989
1989-01-01 4.031
1989-04-01 3.909
1989-07-01 3.603
1989-10-01 3.591
1990-01-01 3.517
1990-04-01 3.563
1990-07-01 3.558
1990-10-01 3.242
1991-01-01 3.173
1991-04-01 3.151
1991-07-01 3.313
1991-10-01 3.341
1992-01-01 3.092
1992-04-01 3.266
1992-07-01 3.544
1992-10-01 3.989
1993-01-01 3.902
1993-04-01 3.762
1993-07-01 5.769
1993-10-01 5.713
1994-01-01 6.688
1994-04-01 6.950
1994-07-01 7.498
1994-10-01 7.975
1995-01-01 9.113
1995-04-01 10.408
1995-07-01 11.418
1995-10-01 11.678
1996-01-01 13.535
1996-04-01 17.094
1996-07-01 18.822
1996-10-01 19.723
1997-01-01 22.201
1997-04-01 27.272
1997-07-01 29.954
1997-10-01 30.819
1998-01-01 32.742
1998-04-01 36.537
1998-07-01 39.426
1998-10-01 39.744
1999-01-01 38.693
1999-04-01 38.214
1999-07-01 41.149
1999-10-01 39.419
2000-01-01 38.121
2000-04-01 41.763
2000-07-01 42.061
2000-10-01 46.659
2001-01-01 45.066
2001-04-01 42.825
2001-07-01 40.636
2001-10-01 40.285
2002-01-01 40.077
2002-04-01 48.851
2002-07-01 48.037
2002-10-01 50.165
2003-01-01 51.556
2003-04-01 50.565
2003-07-01 54.103
2003-10-01 63.476
2004-01-01 94.297
2004-04-01 100.160
2004-07-01 119.187
2004-10-01 147.602
2005-01-01 154.097
2005-04-01 150.205
2005-07-01 172.618
2005-10-01 172.062
2006-01-01 182.061
2006-04-01 185.946
2006-07-01 196.572
2006-10-01 191.722
2007-01-01 215.443
2007-04-01 221.143
2007-07-01 244.749
2007-10-01 228.214
2008-01-01 252.844
2008-04-01 280.483
2008-07-01 259.113
2008-10-01 221.191
2009-01-01 207.927
2009-04-01 220.284
2009-07-01 225.840
2009-10-01 214.129
2010-01-01 216.960
2010-04-01 201.466
2010-07-01 221.445
2010-10-01 211.062
2011-01-01 219.991
2011-04-01 219.804
2011-07-01 212.852
2011-10-01 202.668
2012-01-01 216.908
2012-04-01 202.227
2012-07-01 203.999
2012-10-01 202.555
2013-01-01 195.252
2013-04-01 192.465
2013-07-01 184.673
2013-10-01 188.284
2014-01-01 195.826
2014-04-01 212.785
2014-07-01 225.898
2014-10-01 226.937
2015-01-01 213.221
2015-04-01 234.758