Only a guess but for something more meaningful +50 requires more sub-division. Obligatory re-application age for a licence is 70/73/76/79 which may distort results so suggest 50-59, 60-65 and then +69.
For sure, the age will tend toward 'top-heavy' for our car drivers
Last edited by rab60bit; 14th February 2017 at 09:55..
|