Quarter	Millions of US Dollars
2004-01-01	2973
2004-04-01	3294
2004-07-01	3701
2004-10-01	31720
2005-01-01	33358
2005-04-01	33743
2005-07-01	35879
2005-10-01	37401
2006-01-01	40867
2006-04-01	41860
2006-07-01	43417
2006-10-01	45666
2007-01-01	48445
2007-04-01	51892
2007-07-01	54883
2007-10-01	56284
2008-01-01	60212
2008-04-01	60481
2008-07-01	57690
2008-10-01	49545
2009-01-01	44649
2009-04-01	49433
2009-07-01	58802
2009-10-01	64876
2010-01-01	66579
2010-04-01	63929
2010-07-01	74253
2010-10-01	84097
2011-01-01	99176
2011-04-01	104740
2011-07-01	91956
2011-10-01	100499
2012-01-01	113083
2012-04-01	103822
2012-07-01	109586
2012-10-01	118539
2013-01-01	113131
2013-04-01	112107
2013-07-01	118666
2013-10-01	125770
2014-01-01	113975
2014-04-01	120273
2014-07-01	103401
2014-10-01	67492
2015-01-01	88259
2015-04-01	94618
2015-07-01	82227
2015-10-01	75120
2016-01-01	88454
2016-04-01	90869
2016-07-01	93808
2016-10-01	102391
2017-01-01	117218
2017-04-01	114351
2017-07-01	124763
2017-10-01	128554
2018-01-01	129614