Le Monde's 100 Books of the Century

Le Monde's 100 Books of the Century names 100 books, every one listed here. The most approachable of them is Asterix the Gaul by René Goscinny (difficulty 25/100, about 22 min); the hardest is Écrits by Jacques Lacan (94/100). 20 of its books are on four or more of the eight great rankings.

Questions

How many books are on Le Monde's 100 Books of the Century?
100, all of them listed here with how hard each is to read and how long it takes.
Which book on Le Monde's 100 Books of the Century is the easiest to read?
Asterix the Gaul by René Goscinny, difficulty 25/100, about 22 min. The hardest is Écrits by Jacques Lacan, at 94/100.
How long would it take to read every book on Le Monde's 100 Books of the Century?
About 1,021 hours for the 99 books ReadingRate measures, at 250 words a minute adjusted for each book's difficulty: 510 days at two hours a day.

Other lists: Modern Library 100 Best Novels, TIME All-TIME 100 Novels, BBC Big Read Top 100, 1001 Books You Must Read Before You Die, Open Syllabus Top 500 - Literature, Bokklubben World Library, Great Books of the Western World. All lists.