2007-03-01T000000Z peRatioTypepeRatio The method by which the Price/Earnings ratio is calculated Remember that "period" can specify the time range for years, months, days, hours, minutes, seconds, partial seconds. backward The "peRatio" is calculated using a previously reported earnings value - either the most recent or one denoted by "period" forward12M The "peRatio" is calculated using an analyst's estimated earnings value forward 12 months forwardFiscal The "peRatio" is calculated using an analyst's estimated earnings value for next fiscal year. period The "peRatio" is calculated using an average earnings over the indicated period