There is no MUL.
Or, more precisely, the complete MUL (as in, the actual project/database that became known as "The MUL") hasn't been released so far. It's uncertain if it will ever be completely released to the public.
A beta (!) list of names, BV and introductory dates was released. It's beta, i.e. not an official (as in canonical) product, just work-in-progress for fact checking. I found it tremendously useful (not to say interesting) even knowing that some bits and pieces were still missing or wrong.
Finally, a BV list for certain units and time periods was officially published. Although it was made clear right from the start that it is only a small part of the whole MUL, some people still seem to believe it to be the end product - which it quite clearly is not. It's just sort of an official preview. And it was made quite clear what time periods and what units it encompasses; its only purpose is to provide accurate, reliable (canonical) BV values for the units it includes. No more, no less.
Me, I'm waiting for further releases which we were told would be forthcoming. Until maybe one day the entire MUL project is published...