Search filter for 'years active'/ 'started around'

I would like to be able to filter on when a babe started. For example, I would like to be able search when a pornstar started at 18, even if she isn't 18 now. On the profiles you can see 'started around 18 years old' but cannot filter on it in the search. Just an idea, love what you do, keep up the good work!