So are they committing people who are drunk? That would explain why the number is so high, but that also seems like overkill.
I'm not personally a fan of that, but it's quite common in post-soviet countries and very normalized (people are actually surprised when I tell them that not every country does that)
[1] Ultimately for their own good, not as a punitive measure. They are watched by medical personnel and don't risk dying of hypothermia. Still it's not something I'd like to experience.