I don't think we should compare it to wages, mostly because it's not a wage. Remember that many, many open source projects survive and thrive from dedicated members who contribute for free out of interest and curiosity. That includes us before the compensation, and it includes us now when you go beyond the wallet scope. I'm not saying that the wallet developers are in it for the money, but that the non-wallet contributors are in it because they enjoy doing it.

Some curiosa: Sweden does not have the concept of minimum wage, and the US minimum wage is $7.25.