Quarter	Billions of US Dollars
1999-01-01	314.671
1999-04-01	301.066
1999-07-01	297.983
1999-10-01	299.013
2000-01-01	295.889
2000-04-01	292.424
2000-07-01	303.863
2000-10-01	303.268
2001-01-01	309.819
2001-04-01	306.898
2001-07-01	304.080
2001-10-01	298.393
2002-01-01	295.076
2002-04-01	292.854
2002-07-01	293.436
2002-10-01	289.312
2003-01-01	288.903
2003-04-01	291.638
2003-07-01	294.857
2003-10-01	298.916
2004-01-01	307.750
2004-04-01	308.511
2004-07-01	311.372
2004-10-01	320.266
2005-01-01	321.127
2005-04-01	335.063
2005-07-01	340.319
2005-10-01	343.169
2006-01-01	346.120
2006-04-01	354.591
2006-07-01	364.324
2006-10-01	365.068
2007-01-01	378.754
2007-04-01	399.776
2007-07-01	422.767
2007-10-01	418.070
2008-01-01	437.203
2008-04-01	452.982
2008-07-01	473.516
2008-10-01	468.945
2009-01-01	460.381
2009-04-01	492.897
2009-07-01	513.006
2009-10-01	528.857
2010-01-01	547.526
2010-04-01	575.021
2010-07-01	618.045
2010-10-01	627.365
2011-01-01	668.024
2011-04-01	692.067
2011-07-01	709.168
2011-10-01	705.821
2012-01-01	718.565
2012-04-01	727.699
2012-07-01	749.922
2012-10-01	764.742
2013-01-01	795.349
2013-04-01	839.552
2013-07-01	870.305
2013-10-01	871.347
2014-01-01	916.286
2014-04-01	964.704
2014-07-01	997.835
2014-10-01	983.325
2015-01-01	1037.143
2015-04-01	1048.128
2015-07-01	1056.756
2015-10-01	1066.344
2016-01-01	1071.624
2016-04-01	1083.457
2016-07-01	1101.064
2016-10-01	1129.276
2017-01-01	1166.226
2017-04-01	1218.973
2017-07-01	1240.882
2017-10-01	1271.646
2018-01-01	1301.860