How am I supposed to know where the graphs come from? The paper is conveniently behind a paywall. The abstract does say something about
2,047 biomedical and life-science research articles indexed by PubMed as retracted on May 3, 2012
but this isn't the whole story, since the data on the graph goes back to 1975.
From Gene Expression by Razib Khan who some of you may also know from the old gnxp site or perhaps from his BHTV debate with Eliezer.
Link to original post.