Had a little look around for empirical data and came across this, looks like trade wages are about stagnant but this is only over a few years. https://infogram.

Had a little look around for empirical data and came across this, looks like trade wages are about stagnant but this is only over a few years. https://infogram.com/2018-trades-salary-survey-electricians-still-earn-the-most-1g502y9o4en8pjd https://infogram.com/2018-trades-salary-survey-electricians-...