Quarter	Billions of US Dollars
2000-01-01	138.501
2000-04-01	141.169
2000-07-01	131.974
2000-10-01	131.428
2001-01-01	133.049
2001-04-01	130.343
2001-07-01	141.109
2001-10-01	129.685
2002-01-01	137.172
2002-04-01	156.508
2002-07-01	155.451
2002-10-01	158.658
2003-01-01	172.701
2003-04-01	186.198
2003-07-01	184.530
2003-10-01	192.837
2004-01-01	196.157
2004-04-01	204.851
2004-07-01	211.647
2004-10-01	215.180
2005-01-01	233.241
2005-04-01	227.392
2005-07-01	226.887
2005-10-01	205.738
2006-01-01	222.922
2006-04-01	245.066
2006-07-01	237.515
2006-10-01	237.416
2007-01-01	257.713
2007-04-01	273.485
2007-07-01	298.883
2007-10-01	271.861
2008-01-01	302.348
2008-04-01	304.202
2008-07-01	279.179
2008-10-01	280.877
2009-01-01	281.059
2009-04-01	304.276
2009-07-01	309.915
2009-10-01	331.338
2010-01-01	313.534
2010-04-01	297.363
2010-07-01	333.678
2010-10-01	326.960
2011-01-01	351.949
2011-04-01	361.879
2011-07-01	340.211
2011-10-01	330.811
2012-01-01	346.474
2012-04-01	333.374
2012-07-01	337.268
2012-10-01	344.427
2013-01-01	338.790
2013-04-01	345.702
2013-07-01	365.819
2013-10-01	363.026
2014-01-01	365.591
2014-04-01	369.627
2014-07-01	336.118
2014-10-01	339.762
2015-01-01	305.850
2015-04-01	324.167
2015-07-01	327.667
2015-10-01	317.249
2016-01-01	338.634
2016-04-01	329.961
2016-07-01	324.401
2016-10-01	311.164
2017-01-01	311.688
2017-04-01	335.069
2017-07-01	345.475
2017-10-01	347.194
2018-01-01	355.309