Quarter	Millions of US Dollars
2000-10-01	214618
2001-01-01	219982
2001-04-01	227000
2001-07-01	237931
2001-10-01	251015
2002-01-01	276746
2002-04-01	298811
2002-07-01	341091
2002-10-01	353099
2003-01-01	348333
2003-04-01	391314
2003-07-01	433040
2003-10-01	459616
2004-01-01	500866
2004-04-01	544347
2004-07-01	571822
2004-10-01	637050
2005-01-01	694505
2005-04-01	755524
2005-07-01	822093
2005-10-01	912251
2006-01-01	1024957
2006-04-01	1065599
2006-07-01	1134924
2006-10-01	1198342
2007-01-01	1337258
2007-04-01	1382634
2007-07-01	1544649
2007-10-01	1704548
2008-01-01	1904435
2008-04-01	2020559
2008-07-01	2129144
2008-10-01	2228013
2009-01-01	2205804
2009-04-01	2322731
2009-07-01	2428564
2009-10-01	2577909
2010-01-01	2659159
2010-04-01	2859236
2010-07-01	3001762
2010-10-01	3065346
2011-01-01	3076299
2011-04-01	3183349
2011-07-01	3255758
2011-10-01	3528438
2012-01-01	3602720
2012-04-01	3776034
2012-07-01	4084908
2012-10-01	4294076
2013-01-01	4465412
2013-04-01	4632514
2013-07-01	4770958
2013-10-01	4960864
2014-01-01	4976577
2014-04-01	5250039
2014-07-01	5560059
2014-10-01	5835346
2015-01-01	6110288
2015-04-01	6591913
2015-07-01	7280880
2015-10-01	7752598
2016-01-01	8307705
2016-04-01	8855171
2016-07-01	9398770
2016-10-01	9408770
2017-01-01	9861394
2017-04-01	10366508
2017-07-01	11158089
2017-10-01	11756901
2018-01-01	12490734