Quarter	Billions of US Dollars
1995-10-01	157.029
1996-01-01	148.304
1996-04-01	149.391
1996-07-01	153.208
1996-10-01	152.292
1997-01-01	141.063
1997-04-01	143.013
1997-07-01	145.694
1997-10-01	146.452
1998-01-01	139.615
1998-04-01	147.194
1998-07-01	161.427
1998-10-01	165.352
1999-01-01	152.061
1999-04-01	148.825
1999-07-01	160.661
1999-10-01	156.872
2000-01-01	150.962
2000-04-01	157.646
2000-07-01	154.382
2000-10-01	164.970
2001-01-01	156.616
2001-04-01	150.646
2001-07-01	163.880
2001-10-01	163.837
2002-01-01	161.189
2002-04-01	186.199
2002-07-01	184.954
2002-10-01	197.600
2003-01-01	205.253
2003-04-01	217.037
2003-07-01	221.444
2003-10-01	248.090
2004-01-01	241.306
2004-04-01	240.046
2004-07-01	246.416
2004-10-01	268.852
2005-01-01	258.720
2005-04-01	251.490
2005-07-01	256.236
2005-10-01	246.028
2006-01-01	256.232
2006-04-01	278.365
2006-07-01	284.149
2006-10-01	295.824
2007-01-01	297.114
2007-04-01	318.116
2007-07-01	342.868
2007-10-01	371.315
2008-01-01	405.245
2008-04-01	409.035
2008-07-01	373.729
2008-10-01	369.946
2009-01-01	352.791
2009-04-01	372.934
2009-07-01	387.566
2009-10-01	380.742
2010-01-01	359.516
2010-04-01	332.392
2010-07-01	372.349
2010-10-01	367.928
2011-01-01	392.588
2011-04-01	403.039
2011-07-01	380.304
2011-10-01	370.048
2012-01-01	384.154
2012-04-01	369.228
2012-07-01	380.997
2012-10-01	385.465
2013-01-01	375.031
2013-04-01	383.281
2013-07-01	395.475
2013-10-01	426.707
2014-01-01	425.158
2014-04-01	426.829
2014-07-01	395.642
2014-10-01	371.002
2015-01-01	330.919
2015-04-01	338.745
2015-07-01	345.894
2015-10-01	342.605
2016-01-01	357.971
2016-04-01	349.398
2016-07-01	357.286
2016-10-01	342.945
2017-01-01	351.933
2017-04-01	373.895
2017-07-01	389.667
2017-10-01	398.525
2018-01-01	413.078