And yet a look beyond these figures reveals a subtle but important problem: there is surprisingly little overlap between the content in different language editions. No one edition contains all the information found in other language editions. And the largest language edition, English, contains only 51 per cent of the articles in the second largest edition, German.  

This problem is known as self-focus bias and it places a significant limit on the access to knowledge that Wikipedia provides. It means that Wikipedia not only offers people access to a mere fraction of human knowledge but to a mere fraction of its own articles.

For now. This seems like a great huge area for future growth.

And/or an opportunity for Google.

I would like as much information as possible, local, national, and international.  It would be good to understand how something is perceived by others around the world.

Sounds like a good opportunity for Wikipedia. And/or Google.