I don't actually remember if Finland's is mandatory. I know the U.K. is voluntary.
I think an important point to know also in looking at those two examples is that Finland took well over 20 years to shift their population average sodium intake. In the last record I remember looking at-- and Dr. L'Abbé might be able to confirm it--their average intakes are still higher than ours at our starting point here now.
In the U.K. I think it was in 2004 or 2006 when they started looking at shifting their sodium intake. They started at 3,800 and in 2008 they've just shifted it down to 3,400. They're not anywhere near 2,300 yet. So while yes, those are examples of countries that have taken leadership and action on reducing sodium, they've also through their experience demonstrated the significant challenges in doing it.