What year was M.G.L. Chapter 41, Section 100B enacted in machusetts?

This law? a href="http://www.m.gov/legis/laws/mgl/41-100b.htm" rel="nofollow"http://www.m.gov/legis/laws/mgl/41-10…/a I don't know the exact date, but it was in 2006. If you google it, it will show you a list of when each town accepted it, but the actual date, I can't seem to find.