Good point. Crunch some numbers on that for me, wouldja?
The thing is that people who don't want to accept that things are changing will not be convinced by such data (those scheming scientists probably cooked the books, after all!), nor will they be convinced by actual events, even when those are happening right around them.
Just as with the specifics, you can go searching for the data yourself. If I bring the data, you (or some denialist anyway) will probably suspect it anyway.
In any case, this is a drought thread, after all, and it is always appropriate to bring up droughts on it, it seems to me.
And in this El Nino year, shifts in patterns of precipitation were expected to create drought in many areas, and they seem to have done that.
In general, though, with global warming there will be (and already is) an overall increase in water vapor in the atmosphere. So one would expect more extremes in rain events than in droughts. I think the thing that people will notice with droughts is that they are shifting to new areas as Hadley Cells expand. Places that used to get reliable rain will suddenly not get it as reliably, and other places will suddenly get more rain, often more rain than they can handle and more and more often coming in ever more torrential downpours.