May I add to this? It's the new legislation. However, what you have to bear in mind is if you're involved in criminal activities and you're proven guilty under 467.11, 12, or 13, then you have to serve half your term, which is a deterrent. At one point it's also being used by the criminal elements and some prosecutors as a negotiating tool to secure a guilty plea on a lesser charge, and that's something to bear in mind.
On February 1st, 2007. See this statement in context.