What was our lowest amount of sacks in a season?

[Nicomo Cosca]

Does anyone know what our lowest total for a season was? I couldn’t find it with a quick search, but I’d imagine the 15 we’re currently at, plus maybe a couple more the next 3 games would have to be right around the bottom. I know sacks didn’t officially become a stat until the 80’s, but were any of those 90’s teams worse at getting to the QB? This feels historically bad.