For the most part, I think I'd agree with the statements that have been made.
I can't put a percentage on it, but I know that it pretty much correlates with the people who I've dealt with on the streets over the years. I'd say perhaps close to 80% of those I ever arrested were under the influence of some sort of substance. That's not uncommon. We used to say in the police world that if there was no alcohol in the country, there would be no police; there would be no need for them.
So yes, those are fairly accurate statements.