How to find P/E10 ratio?

Question

I am trying to get P/E ratio for past 10 yrs as readily available info. I see people mentioning P/E10 but don't see as ready info in Yahoo/Morningstar, Bloomberg or Google.

Answer 1

I do believe Morningstar does have this data for the previous 10 years at least for some companies.  I am looking at MMM as I write this.  The average PE for MMM in 1998 was 23.9.  In 2001 it got to 33. And currently is about 13, which I might add is about as low as it has been in the past 10 years.  

Answer 2

http://home.cogeco.ca/~svidyarthi1/membe...