Are dirty old women as common as dirty old men?

Are dirty old women as common as dirty old men?
Just like men, they harass, want and try or manage to date much younger guys/girls that are the age of their children/grandchildren.
It's not a relationship that just happened, for them it's an habit.
They won't date or have a relationship with anyone older or their age, saying that they feel much younger.
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Some cases I've seen are a woman who's 49 but always has younger boyfriends, or even my mother who despite being 43 publicly harasses young models and guys on Facebook who are my age or even younger.
Are dirty old women as common as dirty old men?
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