World's Most Read Books

Last week First Thoughts' Mark Misulia posted about Squidoo's most-read book info-graph.
The social media website Squidoo has produced an info-graph about the most read books in the past fifty years. Who knows whether it’s better that more copies of Dan Brown were sold than copies of the Twilight Saga, but it’s encouraging to know that the Bible beat out the rest by over 3 billion copies.
When I looked over the graph, I couldn't decide if I should be excited or depressed. It's wonderful to see the Bible towering so far above even it's closest competitor. Of the rest, I've only read The Lord of the Rings. I started Gone with the Wind in college, and still hope to finish it some time. The presence of Twilight scares me a little. Surely books of greater literary merit have been written in the last 50 years. It's fascinating to me that four slots went to the fantasy genre -- this says something about our generations taste in reading.
I wonder what this list will look like in 2062?