From Yes! Magazine’s article about the International Book Fair in Cuba:
More than 300 publishing houses from more than 43 countries have set up stalls and events in the fortress. The book fair will stay in Havana for 11 days, then it will travel to 30 other cities across Cuba.
Last year more than 5 million people attended the book fair, purchasing more than 6 million books. To put this in context, Cuba has a population of 11.5 million people. That means nearly half the entire population goes to the book fair. Imagine participation on this scale anywhere else in the world. In the U.S., that would mean no less than 152 million people coming out to attend, of all things, a book fair.