And how many people go to airshows compared to driving on the roads Roland? Indeed your choice of stastics is quite unfortunate as at least 7 more people have died 'on the roads' thanks to a seemingly poorly thought through display area.
Recently when I was Display Director at an airshow I ended up paying £800 to close a small country road that ran through the main display axes. We also closed a public footpath. Both myself and my Flying Control Committee thought that the risk was too great and that by not having one less display aircraft and spending that £800 then we were truly not ALARP. It would be interesting to see Shoreham's risk assessment on the A27 and why they thought that flying high energy low-level manoeuvres over it was ok. Now that is with hindsight, but there are an awful lot of displays that seem to have similar groups of people and vehicles close to the display area - Waddington with the A15 and Fairford with the plethora of car parks and camp sites come to mind.
I don't think Airshows should stop or that vintage jets should be banned, but I do believe that a rethink following this tragedy is required. In 1952 Mr Duncan Sandys led a Public Inquiry when 30-odd were killed at Farnborough - I suspect we will be having the same. But that's common in aviation safety, we constantly strive to learn to be wise for the future - that's what we do...
LJ