To answer my own question: I pieced together a partial picture from scattered data for fatalities and serious injuries in electrical utility workers from the la

To answer my own question: I pieced together a partial picture from scattered data for fatalities and serious injuries in electrical utility workers from the late 80s onward for Ireland, UK and USA. It seems to have got a bit better through the early 2000s and is maybe flat recently. In any case not worse than the 80s as I conjectured carelessly, though not sharply better either.