Just like, say, Norway. Oh wait, Norway has the highest standard of living in the world.
For example, according to the Heritage economic freedom ranking, Norway is 70.8. For comparison the US has 75.4, Singapore 87.8 and Venezuela 33.7.
http://www.heritage.org/index/ranking
The Fraser institute has similar results: http://www.freetheworld.com/2015/economic-freedom-of-the-wor...
But I bet you already knew that.
It's also a very well administered government.
Statoil ownership according to Wikipedia:
Government of Norway (67%) Government Pension Fund of Norway (3%) Others (30%)
https://en.m.wikipedia.org/wiki/Category:Government-owned_co...