Quarter	Billions of US Dollars
2000-01-01	243.141
2000-04-01	235.267
2000-07-01	215.903
2000-10-01	219.063
2001-01-01	209.387
2001-04-01	208.956
2001-07-01	222.054
2001-10-01	210.037
2002-01-01	211.913
2002-04-01	245.560
2002-07-01	241.932
2002-10-01	256.464
2003-01-01	274.543
2003-04-01	286.686
2003-07-01	299.286
2003-10-01	323.795
2004-01-01	321.462
2004-04-01	324.455
2004-07-01	336.724
2004-10-01	362.832
2005-01-01	347.087
2005-04-01	341.547
2005-07-01	332.796
2005-10-01	324.103
2006-01-01	333.572
2006-04-01	351.192
2006-07-01	346.441
2006-10-01	348.676
2007-01-01	359.410
2007-04-01	371.429
2007-07-01	386.380
2007-10-01	392.787
2008-01-01	436.167
2008-04-01	439.712
2008-07-01	407.044
2008-10-01	493.965
2009-01-01	493.997
2009-04-01	511.309
2009-07-01	529.055
2009-10-01	512.344
2010-01-01	485.512
2010-04-01	458.064
2010-07-01	511.894
2010-10-01	507.321
2011-01-01	545.099
2011-04-01	566.221
2011-07-01	536.682
2011-10-01	520.277
2012-01-01	544.863
2012-04-01	526.441
2012-07-01	548.591
2012-10-01	572.316
2013-01-01	559.237
2013-04-01	586.515
2013-07-01	604.363
2013-10-01	617.871
2014-01-01	615.421
2014-04-01	624.133
2014-07-01	573.078
2014-10-01	554.508
2015-01-01	500.760
2015-04-01	508.344
2015-07-01	507.079
2015-10-01	486.765
2016-01-01	509.554
2016-04-01	492.236
2016-07-01	484.897
2016-10-01	463.106
2017-01-01	457.265
2017-04-01	485.693
2017-07-01	492.273
2017-10-01	504.478
2018-01-01	507.118