Quarter	Millions of US Dollars
2002-04-01	469433
2002-07-01	462453
2002-10-01	491515
2003-01-01	470924
2003-04-01	502167
2003-07-01	520990
2003-10-01	518374
2004-01-01	552198
2004-04-01	557278
2004-07-01	563267
2004-10-01	654464
2005-01-01	694116
2005-04-01	702473
2005-07-01	698520
2005-10-01	730223
2006-01-01	771821
2006-04-01	825171
2006-07-01	843445
2006-10-01	866747
2007-01-01	887065
2007-04-01	925474
2007-07-01	939403
2007-10-01	929061
2008-01-01	900179
2008-04-01	873264
2008-07-01	757839
2008-10-01	706286
2009-01-01	723285
2009-04-01	826827
2009-07-01	925982
2009-10-01	949342
2010-01-01	1010384
2010-04-01	957968
2010-07-01	1047892
2010-10-01	1061449
2011-01-01	1117849
2011-04-01	1167555
2011-07-01	1071282
2011-10-01	1103312
2012-01-01	1158222
2012-04-01	1162516
2012-07-01	1216961
2012-10-01	1285976
2013-01-01	1269793
2013-04-01	1265829
2013-07-01	1361282
2013-10-01	1410738
2014-01-01	1420230
2014-04-01	1518174
2014-07-01	1461808
2014-10-01	1435370
2015-01-01	1450296
2015-04-01	1485175
2015-07-01	1415952
2015-10-01	1426716
2016-01-01	1504100
2016-04-01	1502300
2016-07-01	1574518
2016-10-01	1428992
2017-01-01	1566887
2017-04-01	1564204
2017-07-01	1565135
2017-10-01	1692848
2018-01-01	1730126