Quarter	Millions of US Dollars
2000-10-01	94249
2001-01-01	97052
2001-04-01	98566
2001-07-01	103513
2001-10-01	107580
2002-01-01	108969
2002-04-01	111472
2002-07-01	140230
2002-10-01	142534
2003-01-01	132778
2003-04-01	159159
2003-07-01	194882
2003-10-01	187565
2004-01-01	224266
2004-04-01	254934
2004-07-01	262288
2004-10-01	321564
2005-01-01	379162
2005-04-01	431459
2005-07-01	468346
2005-10-01	530766
2006-01-01	632563
2006-04-01	665057
2006-07-01	712600
2006-10-01	746577
2007-01-01	880074
2007-04-01	903082
2007-07-01	949709
2007-10-01	950445
2008-01-01	1107582
2008-04-01	1186603
2008-07-01	1271826
2008-10-01	1311470
2009-01-01	1256716
2009-04-01	1255041
2009-07-01	1285967
2009-10-01	1371826
2010-01-01	1419395
2010-04-01	1510956
2010-07-01	1542499
2010-10-01	1523695
2011-01-01	1477408
2011-04-01	1497207
2011-07-01	1482589
2011-10-01	1543073
2012-01-01	1592892
2012-04-01	1604845
2012-07-01	1676133
2012-10-01	1718259
2013-01-01	1792547
2013-04-01	1770205
2013-07-01	1776835
2013-10-01	1841312
2014-01-01	1901506
2014-04-01	1960893
2014-07-01	2052544
2014-10-01	2152280
2015-01-01	2379407
2015-04-01	2593218
2015-07-01	2936106
2015-10-01	3058088
2016-01-01	3253048
2016-04-01	3377637
2016-07-01	3519568
2016-10-01	3531640
2017-01-01	3846450
2017-04-01	3986556
2017-07-01	4273487
2017-10-01	4462225
2018-01-01	4767161