Quarter	US Dollars, sum over component sub-periods
2006-01-01	58246400000
2006-04-01	64082200000
2006-07-01	65920300000
2006-10-01	68382300000
2007-01-01	62859600000
2007-04-01	70116900000
2007-07-01	72835500000
2007-10-01	76792400000
2008-01-01	71946400000
2008-04-01	80524100000
2008-07-01	85168900000
2008-10-01	71861800000
2009-01-01	52069200000
2009-04-01	53676200000
2009-07-01	61452900000
2009-10-01	67702300000
2010-01-01	66376700000
2010-04-01	74780200000
2010-07-01	77898500000
2010-10-01	82747300000
2011-01-01	79967000000
2011-04-01	88133000000
2011-07-01	92066900000
2011-10-01	91042200000
2012-01-01	88000500000
2012-04-01	93036000000
2012-07-01	92519100000
2012-10-01	97595000000
2013-01-01	89450900000
2013-04-01	97657500000
2013-07-01	97389400000
2013-10-01	97140400000
2014-01-01	92176200000
2014-04-01	100981900000
2014-07-01	102965500000
2014-10-01	104316000000
2015-01-01	92690000000
2015-04-01	100080200000
2015-07-01	102647800000
2015-10-01	100155400000
2016-01-01	89197400000
2016-04-01	96887700000
2016-07-01	100236400000
2016-10-01	101047500000
2017-01-01	97570200000
2017-04-01	103053700000
2017-07-01	108005400000
2017-10-01	112135200000
2018-01-01	107144300000
2018-04-01	116748100000