I don't think it's that recent, I feel like they've been pretty 'wealthy' for a while. Interestingly, NOK-EUR YTD hasn't been that great http://ur1.ca/fuyz4
As opposed to selling exploitation rights to investors to enrich a kleptocracy.
According to Wikipedia, there are discussions about how much of the oil revenues should be saved; opponents of using more of them directly say that it would just lead to inflation.
https://en.wikipedia.org/wiki/The_Government_Pension_Fund_of...