Quarter	Millions of US Dollars
2010-04-01	381
2010-07-01	422
2010-10-01	536
2011-01-01	595
2011-04-01	696
2011-07-01	637
2011-10-01	601
2012-01-01	673
2012-04-01	609
2012-07-01	645
2012-10-01	668
2013-01-01	658
2013-04-01	586
2013-07-01	606
2013-10-01	331
2014-01-01	329
2014-04-01	276
2014-07-01	271
2014-10-01	261
2015-01-01	218
2015-04-01	222
2015-07-01	215
2015-10-01	203
2016-01-01	213
2016-04-01	301
2016-07-01	395
2016-10-01	387
2017-01-01	407
2017-04-01	459
2017-07-01	779
2017-10-01	862
2018-01-01	979