Quarter	Millions of US Dollars
2010-04-01	46764
2010-07-01	57015
2010-10-01	53275
2011-01-01	63024
2011-04-01	56976
2011-07-01	49929
2011-10-01	41473
2012-01-01	48594
2012-04-01	48267
2012-07-01	54600
2012-10-01	57220
2013-01-01	55768
2013-04-01	60505
2013-07-01	64471
2013-10-01	63881
2014-01-01	66692
2014-04-01	70287
2014-07-01	65296
2014-10-01	62822
2015-01-01	62016
2015-04-01	61202
2015-07-01	64621
2015-10-01	60905
2016-01-01	69359
2016-04-01	66625
2016-07-01	71313
2016-10-01	66767
2017-01-01	70920
2017-04-01	77080
2017-07-01	82525
2017-10-01	85906
2018-01-01	90968