YA Deals 2011-2012.
Oh, infographics, I love you.
At Kate Hart's blog (click through for commentary and many more charts!):
In the next post, she covers single titles vs. series (and again, this is only a sample of many more charts):
And in the third post, she looks at trends. YAY TRENDS! (Click through for more, as these are especially fun!):
(I assume that's adult authors new to YA. Which wouldn't include, say, John Grisham, as he's now three books into his horrible, horrible series.)