Quarter	Millions of US Dollars
2009-04-01	93851
2009-07-01	93704
2009-10-01	99445
2010-01-01	107568
2010-04-01	104051
2010-07-01	109224
2010-10-01	115248
2011-01-01	122945
2011-04-01	126375
2011-07-01	111301
2011-10-01	112518
2012-01-01	127498
2012-04-01	121852
2012-07-01	127468
2012-10-01	128500
2013-01-01	138326
2013-04-01	133207
2013-07-01	133493
2013-10-01	138107
2014-01-01	140491
2014-04-01	144966
2014-07-01	142063
2014-10-01	131325
2015-01-01	127520
2015-04-01	128219
2015-07-01	121578
2015-10-01	117135
2016-01-01	118146
2016-04-01	112128
2016-07-01	108140
2016-10-01	102966
2017-01-01	115060
2017-04-01	120953
2017-07-01	123002
2017-10-01	114754
2018-01-01	125356