Quarter	Millions of US Dollars
2010-04-01	422
2010-07-01	454
2010-10-01	536
2011-01-01	600
2011-04-01	707
2011-07-01	647
2011-10-01	603
2012-01-01	677
2012-04-01	613
2012-07-01	649
2012-10-01	673
2013-01-01	668
2013-04-01	598
2013-07-01	622
2013-10-01	348
2014-01-01	343
2014-04-01	293
2014-07-01	290
2014-10-01	279
2015-01-01	232
2015-04-01	227
2015-07-01	215
2015-10-01	204
2016-01-01	214
2016-04-01	302
2016-07-01	396
2016-10-01	392
2017-01-01	413
2017-04-01	462
2017-07-01	782
2017-10-01	876
2018-01-01	989