(in a unique and snowflakey way, no doubt).
Interesting article on BBC site  reports and extrapolates from a survey of 4000 people -- "the books least likely to be finished by Britons". Direct quotations in bold.
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almost half the books these people bought remained unfinished. a.k.a. "What a lot of books! Have you read them all?" "No, not yet." My 'unread' pile is considerably less than half of the books I currently own: on the other hand, over a given period, I may well buy many more books than I read. This is called an 'accident' or an 'investment'. 
Also, I don't tend to read every non-fiction book all the way through -- I'm often only reading for particular information.
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32% had started but not finished Harry Potter and the Goblet of Fire; 28% ditto for Ulysses. This is what it 
says. I think they mean "of the people who'd bought the Potter book (lots), 32% did not finish it. Of the people who bought 
Ulysses (not many), 28% did not finish it.'
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The average Briton spent more than £4,000 on books during their lifetime. Well, yes, but how 
much more than £4,000? In my case quite a bit more. (OK, quite a lot more.) Mind you, I might be making up for my brother-in-law, who is quite proud of the fact he's never bought (or read) a book in his life.
And less than a quarter of Britons find time to read every day, apparently.
As far as the survey goes, it's interesting -- though I suspect there are many more books that are least likely to be 
started by Britons.