I am afraid this is probably with access to the forum only, which is normal.
Registration is free and simple, language is quiet well spread, and members are from all over the world.
If a barrier, perhaps local German forum could institute the same idea, but it would also be limited to members of these forum.
I know a French forum doing similar statistics, also confined to that forum and membership.
This is an excellent idea helping to create stronger links to our passion worldwide ….
I'll spread the idea in our club leaving each member decide on their own and by themselves.