Quarter	Billions of US Dollars
1999-10-01	243.852
2000-01-01	232.452
2000-04-01	235.721
2000-07-01	239.737
2000-10-01	234.095
2001-01-01	234.534
2001-04-01	235.891
2001-07-01	239.731
2001-10-01	238.276
2002-01-01	238.258
2002-04-01	242.542
2002-07-01	247.579
2002-10-01	253.331
2003-01-01	262.100
2003-04-01	277.439
2003-07-01	284.982
2003-10-01	304.357
2004-01-01	324.360
2004-04-01	330.515
2004-07-01	337.821
2004-10-01	381.528
2005-01-01	378.515
2005-04-01	387.378
2005-07-01	396.850
2005-10-01	421.612
2006-01-01	449.170
2006-04-01	487.132
2006-07-01	487.766
2006-10-01	549.448
2007-01-01	585.896
2007-04-01	690.805
2007-07-01	780.786
2007-10-01	843.036
2008-01-01	952.114
2008-04-01	1012.108
2008-07-01	1002.006
2008-10-01	927.151
2009-01-01	860.808
2009-04-01	882.086
2009-07-01	928.320
2009-10-01	954.127
2010-01-01	951.720
2010-04-01	934.822
2010-07-01	988.866
2010-10-01	1028.701
2011-01-01	1113.851
2011-04-01	1185.851
2011-07-01	1133.653
2011-10-01	1190.995
2012-01-01	1294.603
2012-04-01	1267.731
2012-07-01	1356.286
2012-10-01	1456.035
2013-01-01	1491.128
2013-04-01	1488.259
2013-07-01	1574.481
2013-10-01	1616.135
2014-01-01	1558.608
2014-04-01	1639.211
2014-07-01	1479.153
2014-10-01	1161.978
2015-01-01	1153.658
2015-04-01	1181.817
2015-07-01	1053.993
2015-10-01	1012.964
2016-01-01	1089.815
2016-04-01	1103.624
2016-07-01	1125.726
2016-10-01	1168.738
2017-01-01	1254.417
2017-04-01	1227.693
2017-07-01	1276.949
2017-10-01	1284.165
2018-01-01	1307.941