Probably more correct to do one minus the chance of no injuries. So the chance of no injury is (1 - 0.0139) ^ 80 = 32.6%, making the chance of serious injury 6

Probably more correct to do one minus the chance of no injuries. So the chance of no injury is (1 - 0.0139) ^ 80 = 32.6%, making the chance of serious injury 67.4% over 80 years.