Quarter	Millions of US Dollars
2000-10-01	4409
2001-01-01	4409
2001-04-01	3836
2001-07-01	4297
2001-10-01	4831
2002-01-01	5205
2002-04-01	5430
2002-07-01	6033
2002-10-01	8085
2003-01-01	8846
2003-04-01	8653
2003-07-01	9595
2003-10-01	11079
2004-01-01	12227
2004-04-01	12389
2004-07-01	13596
2004-10-01	15189
2005-01-01	15552
2005-04-01	18549
2005-07-01	27467
2005-10-01	39586
2006-01-01	51169
2006-04-01	61695
2006-07-01	65306
2006-10-01	73008
2007-01-01	73617
2007-04-01	78400
2007-07-01	89142
2007-10-01	110490
2008-01-01	126818
2008-04-01	134007
2008-07-01	152573
2008-10-01	195435
2009-01-01	225462
2009-04-01	278633
2009-07-01	307606
2009-10-01	361330
2010-01-01	398404
2010-04-01	449593
2010-07-01	499218
2010-10-01	528823
2011-01-01	577143
2011-04-01	608286
2011-07-01	629775
2011-10-01	780090
2012-01-01	797589
2012-04-01	959734
2012-07-01	1116569
2012-10-01	1248736
2013-01-01	1314746
2013-04-01	1424406
2013-07-01	1478317
2013-10-01	1541072
2014-01-01	1543518
2014-04-01	1711650
2014-07-01	1809804
2014-10-01	1896340
2015-01-01	1968698
2015-04-01	2045927
2015-07-01	2127273
2015-10-01	2247406
2016-01-01	2461237
2016-04-01	2486589
2016-07-01	2597115
2016-10-01	2544736
2017-01-01	2602644
2017-04-01	2626779
2017-07-01	2754861
2017-10-01	2850707
2018-01-01	3076782