I think I have very little to add to those two previous answers. I endorse the notion that the increase in the statistics may be an increase in detection of a pre-existing problem. The logic of increasing may be as was suggested by Mr. Casey, but it may equally also be that the first increases weren't enough to have the desired deterrent effect and we need to actually redouble our efforts.
On February 4th, 2015. See this statement in context.