I watched a documentary quite a while ago, I'm pretty sure about Finland, but I'm guessing the same goes for all Scandinavian countries. The jist was, all those countries are extremely wealthy right now due to oil revenue, which will obviously eventually run out.
However, government policy dictates that they horde and invest huge amounts of cash, in preparation for the oil shortage, so they can continue their standard of living. The documentary went around asking typical families about the policy, and they all thought it was a great idea, since it means future generations could also live in prosperity.
Whether or not it's true, no idea. The social safety net these countries provide can't be cheap, so no idea how much (if any) the governments are hording / investment for future generations. If anything though, I'd say Scandinavians have their heads on their shoulders properly, so they've probably planned for the future quite well.
Who knows... I know I'm not about to spend hours researching it though.
