SELECT Age ,  COUNT(*) FROM editor GROUP BY Age
What are the different ages of editors? Show each age along with the number of editors of that age.
[Schema (values) (types)]: | journal_committee |  journal : journal_id (text) , date (number) , theme (text) , sales (text) | editor : editor_id (text) , name (number) , age (text) | journal_committee : editor_id (text) , journal_id (number) , work_type (text);