Quarter	Billions of US Dollars
1998-10-01	154.958
1999-01-01	151.837
1999-04-01	152.071
1999-07-01	162.288
1999-10-01	164.151
2000-01-01	164.998
2000-04-01	165.270
2000-07-01	155.793
2000-10-01	166.819
2001-01-01	162.560
2001-04-01	160.618
2001-07-01	175.886
2001-10-01	180.660
2002-01-01	182.338
2002-04-01	216.523
2002-07-01	221.422
2002-10-01	237.022
2003-01-01	241.588
2003-04-01	264.175
2003-07-01	277.668
2003-10-01	319.526
2004-01-01	315.855
2004-04-01	319.305
2004-07-01	347.546
2004-10-01	399.860
2005-01-01	387.447
2005-04-01	375.433
2005-07-01	399.774
2005-10-01	407.819
2006-01-01	456.564
2006-04-01	513.556
2006-07-01	533.085
2006-10-01	572.860
2007-01-01	604.264
2007-04-01	631.255
2007-07-01	696.094
2007-10-01	724.660
2008-01-01	831.195
2008-04-01	855.316
2008-07-01	826.280
2008-10-01	851.210
2009-01-01	832.195
2009-04-01	894.092
2009-07-01	937.923
2009-10-01	935.682
2010-01-01	915.913
2010-04-01	826.301
2010-07-01	909.850
2010-10-01	890.116
2011-01-01	964.724
2011-04-01	979.744
2011-07-01	992.522
2011-10-01	956.760
2012-01-01	1005.382
2012-04-01	971.340
2012-07-01	1018.329
2012-10-01	1015.370
2013-01-01	983.009
2013-04-01	985.208
2013-07-01	1014.781
2013-10-01	1050.876
2014-01-01	1057.217
2014-04-01	1064.828
2014-07-01	993.702
2014-10-01	988.887
2015-01-01	1163.177
2015-04-01	1179.872
2015-07-01	1173.884
2015-10-01	1168.590
2016-01-01	1225.597
2016-04-01	1193.010
2016-07-01	1152.551
2016-10-01	1099.247
2017-01-01	1093.221
2017-04-01	1147.505
2017-07-01	1179.047
2017-10-01	1168.084
2018-01-01	1179.455