Inactive languages

Whilst updating this page I have come across a few languages which have had any activity by a human translator on them for a long while; for example Ingush (last activity 2007). Usually, these languages have got a very small percentage of translated messages. Do we want to add any information concerning the last date of human translation into a language, either to this page, or to the Special:SupportedLanguages. How easy would that be to do?