Sorry, but without some sort of source, I am skeptical, but also acknowledge that different markets and economies will reward labor in different ways. So when it comes to the US this is a common talking point on the English speaking internet, "the trades pay well", "my buddy makes $150k a year as a carpenter, so you should think about becoming a carpenter too", etc. The fundamental problem is that while yes, there are people who make good money in the trades, on average, it simply isn't true, as opposed to being a software engineer, where the average employee is compensated quite well.
My sister has a trade and has talked about the salary distribution enough that I think it’s going to be very hard for anyone to ever agree on numbers.
She describes it as a bimodal distribution. One (smaller) group of people with trades are willing to work anywhere whenever. They work in fly-in camps with limited work seasons and practically unlimited overtime. Since there’s nothing else to do, they log enough hours to get into double and triple time. The other (larger) group goes home after work and their overtime is limited to nonexistent. The pay is so different between the two groups that if they’re analyzed together, the statistically typical tradesperson looks nothing like the typical tradesperson.
I actually wouldn't be surprised to find that most labor markets are bi-modal (but certainly not all). Which is why I used median wage and not average wage, because the median is very likely to grab the common tradespersons compensation experience whereas the average is likely to be skewed high by the upper distribution group.
