Due to the population figures being based on the years 2011 and 2016, I downloaded the correlating years road deaths from RSA. I added in the road deaths next to each county for that year.
I then divided the number of road deaths into the population. I rounded this number into the closest whole number. This took awhile as I went over the numbers a few times to check that they were correct. Also the metric measurement used was cm as that would be the easiest measurement to make the daisy chains.