Quarter	Billions of US Dollars
1995-10-01	99.491
1996-01-01	95.795
1996-04-01	95.626
1996-07-01	97.656
1996-10-01	97.338
1997-01-01	89.692
1997-04-01	88.733
1997-07-01	88.907
1997-10-01	88.392
1998-01-01	84.603
1998-04-01	87.970
1998-07-01	95.629
1998-10-01	96.851
1999-01-01	89.655
1999-04-01	87.724
1999-07-01	93.776
1999-10-01	90.946
2000-01-01	86.735
2000-04-01	88.842
2000-07-01	84.786
2000-10-01	90.001
2001-01-01	85.795
2001-04-01	83.867
2001-07-01	92.281
2001-10-01	88.576
2002-01-01	88.427
2002-04-01	102.222
2002-07-01	102.818
2002-10-01	110.412
2003-01-01	114.962
2003-04-01	120.930
2003-07-01	125.038
2003-10-01	136.768
2004-01-01	133.750
2004-04-01	138.516
2004-07-01	143.167
2004-10-01	160.676
2005-01-01	154.326
2005-04-01	148.094
2005-07-01	150.468
2005-10-01	155.027
2006-01-01	163.640
2006-04-01	174.489
2006-07-01	176.178
2006-10-01	184.214
2007-01-01	190.164
2007-04-01	193.018
2007-07-01	205.209
2007-10-01	215.063
2008-01-01	234.078
2008-04-01	233.840
2008-07-01	215.043
2008-10-01	212.526
2009-01-01	201.353
2009-04-01	213.772
2009-07-01	223.520
2009-10-01	221.011
2010-01-01	208.420
2010-04-01	193.597
2010-07-01	216.210
2010-10-01	214.931
2011-01-01	226.769
2011-04-01	235.550
2011-07-01	221.306
2011-10-01	212.708
2012-01-01	218.929
2012-04-01	207.011
2012-07-01	213.151
2012-10-01	217.738
2013-01-01	210.027
2013-04-01	214.462
2013-07-01	223.519
2013-10-01	227.683
2014-01-01	226.550
2014-04-01	225.821
2014-07-01	209.801
2014-10-01	203.214
2015-01-01	183.911
2015-04-01	191.998
2015-07-01	192.720
2015-10-01	188.319
2016-01-01	197.214
2016-04-01	193.487
2016-07-01	196.648
2016-10-01	187.862
2017-01-01	190.599
2017-04-01	204.480
2017-07-01	213.531
2017-10-01	218.130
2018-01-01	223.514