Uh 0%?

There are many people that run open weight LLMs. And unsurprisingly, they don't all have a copy of the FBI employee database.

If you mean "using" an open weight LLM in combination with other tools or even potentially frontier models, then that's a lot more likely.

Well, I haven't tried asking my open-weight LLM for the FBI employee database. I imagine most people haven't.