Quarter	Millions of US Dollars
2003-10-01	90449
2004-01-01	94979
2004-04-01	100731
2004-07-01	109581
2004-10-01	127641
2005-01-01	132454
2005-04-01	137120
2005-07-01	142310
2005-10-01	146334
2006-01-01	154838
2006-04-01	160035
2006-07-01	165911
2006-10-01	179638
2007-01-01	182455
2007-04-01	187930
2007-07-01	201795
2007-10-01	226380
2008-01-01	246758
2008-04-01	256195
2008-07-01	239467
2008-10-01	203797
2009-01-01	178408
2009-04-01	206448
2009-07-01	238818
2009-10-01	243407
2010-01-01	268833
2010-04-01	236645
2010-07-01	286840
2010-10-01	275725
2011-01-01	308200
2011-04-01	325109
2011-07-01	273882
2011-10-01	265719
2012-01-01	303680
2012-04-01	292714
2012-07-01	319691
2012-10-01	333006
2013-01-01	329479
2013-04-01	328845
2013-07-01	343675
2013-10-01	357002
2014-01-01	317897
2014-04-01	324734
2014-07-01	305788
2014-10-01	291402
2015-01-01	280545
2015-04-01	275795
2015-07-01	283799
2015-10-01	270792
2016-01-01	292279
2016-04-01	280462
2016-07-01	288725
2016-10-01	277814
2017-01-01	292100
2017-04-01	312917
2017-07-01	319213
2017-10-01	341680
2018-01-01	352935