Is maths allowed?
Number of GA departures / number of GA EFATO? (you can pick your timescale "per day/month/year")
I suspect the result is an extremely small number.
Not zero, but...
Then, another sum:
Number of GA PFL / number of GA PFL that end up going wrong and end up on the ground
Also a very small number, but just might be higher than the first answer.
Just a thought...