Today Wikipedia celebrates its 20th birthday. But how much do you really know about the crowdsourced encyclopedia? Test your knowledge (and no peeking ahead at the answers!) 👇 
Wikipedia is the most-read reference work ever. How many page views does the site attract per month?
Read how the site, once treated as a bit of a joke, came to be taken seriously econ.st/2LKm3MT
In which country is Wikipedia most popular?
Find out how the site's readership compares around the world econ.st/2LKm3MT
How many articles does Wikipedia host across all its different languages?
Like any institution Wikipedia has its flaws, but its achievements are vast econ.st/35ERxLj
Finally, roughly how many languages have Wikipedia editions of their own?
Around 80% of Wikipedia's editors are male, and skewed towards North America and Europe. But the site's future lies in poorer countries econ.st/2LKm3MT
The number of people actively editing Wikipedia articles in English, its most-used language, peaked in 2007 at 53,000, before starting a decade-long decline econ.st/38HkRCO
Attracting a steady supply of new editors is vital for Wikipedia’s long-term survival. So is adding new kinds of contributors econ.st/38HkRCO
Wikipedia may have done the bulk of its organisation of the world’s information long ago, but most of the work towards making it universally accessible and useful still lies ahead. Read more here econ.st/38HkRCO
And on “The Economist Asks” podcast with @AnneMcElvoy, we ask Wikipedia’s founder @jimmy_wales about social media's role in society, his mission to increase diversity among Wikipedia’s contributors and his top tips for homeschooling econ.st/2KfJEo4
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