How old are the cast members from the brady bunch?

How old are the cast members from the brady bunch?
Mr Brady died in 1992 at age 59, mrs. Brady is now 78, Alice died in 1997 at age 86, Greg is now 57, Marcia is 55, Peter is 54, Jan is 54, Bobby is 51, and Cindy is 50. This is as of 2012