Quarter	Billions of US Dollars
1998-10-01	385.284
1999-01-01	368.085
1999-04-01	357.938
1999-07-01	369.924
1999-10-01	349.551
2000-01-01	344.751
2000-04-01	343.433
2000-07-01	327.010
2000-10-01	346.231
2001-01-01	332.538
2001-04-01	325.446
2001-07-01	361.062
2001-10-01	351.242
2002-01-01	347.549
2002-04-01	401.081
2002-07-01	408.261
2002-10-01	430.087
2003-01-01	464.098
2003-04-01	492.359
2003-07-01	505.545
2003-10-01	537.688
2004-01-01	545.499
2004-04-01	552.274
2004-07-01	577.868
2004-10-01	633.162
2005-01-01	626.244
2005-04-01	604.323
2005-07-01	609.776
2005-10-01	605.540
2006-01-01	630.407
2006-04-01	678.759
2006-07-01	704.185
2006-10-01	743.252
2007-01-01	764.723
2007-04-01	779.954
2007-07-01	833.612
2007-10-01	886.631
2008-01-01	970.829
2008-04-01	976.608
2008-07-01	893.738
2008-10-01	916.434
2009-01-01	886.868
2009-04-01	950.425
2009-07-01	997.071
2009-10-01	982.311
2010-01-01	940.589
2010-04-01	869.766
2010-07-01	969.598
2010-10-01	935.713
2011-01-01	1004.824
2011-04-01	1035.763
2011-07-01	1008.624
2011-10-01	968.764
2012-01-01	1003.927
2012-04-01	959.872
2012-07-01	991.588
2012-10-01	1015.580
2013-01-01	980.855
2013-04-01	1000.151
2013-07-01	1033.779
2013-10-01	1028.304
2014-01-01	1035.852
2014-04-01	1027.162
2014-07-01	976.456
2014-10-01	941.649
2015-01-01	841.123
2015-04-01	862.569
2015-07-01	875.551
2015-10-01	844.455
2016-01-01	885.509
2016-04-01	871.090
2016-07-01	880.930
2016-10-01	816.871
2017-01-01	825.324
2017-04-01	881.486
2017-07-01	912.181
2017-10-01	925.169
2018-01-01	946.478