Finland is artificially kept out of the great 'austerity/fix program'. Moreover it is a nation of 3 million people, and a clear vassal of other powers.
Norway isn't in the EU, and has oil, so it makes sense they are doing great.
Sweden has a long tradition of euro socialism.
I'm sorry Kyriakos but I'm sick and tired of people reducing the Scandinavian countries to oil (when I mention the example of Scandinavia to people, they go BUT DENMARK AND NORWAY HAS OIL, well, Sweden doesn't have oil, and they're pretty much doing as good as Denmark and Norway). Stop it.
Additionally the euro socialism thing isn't making sense, neither does Finlands "vassalhood". All Scandinavian polities, including Finland, and Iceland too (they have completely recovered from the crack at this point), are doing exceptionally well while having a comparably high standard of living across all social layers.
EDIT: In fact if you want to talk raw materials as basis for prosperity, it doesn't really hold up here in the cold north. Beside the oil, which is relevant but doesn't explain the whole situation, Denmark is all agriculture and fishing, we have no relevant raw materials on land except the land itself. Additionally, our climate is comparably cold, so it's really really difficult for us to compete with Southern Europe. Yet we still prosper. Some reasons are the extremely low corruption, the comparably large wealth redistribution (which keeps demand up). But then there's our complex industry, stuff like advanced plastics, windmills, hearing aids, insuline products, we do really well at that, infact our service economy is really strong too. A huge part of it is the free education and support all through university so we have plenty of well-educated people to hire. And very few move out of Denmark afterwards, partly because people don't really want to leave their friends when they live in a stable society (contrary to Syria where people are willing to leave their friends for a number of reasons), and because they want to secure a surefire future for their kids.
That's what explains the high degree of welfare and the strong economy. Saudi Arabia has oil too, in fact quite a bit more than Denmark does, but fails in so many other areas. Oil doesn't mean squat without a proper society to structure and shape the wealth properly. Now, think of this situation in Denmark - where we pretty much live off a high educational standard and advanced businesses - and overlay it on the US
which actually has the natural resources to sustain such an economy even more. Danish industry specializes itself to survive because we don't have iron here, nor do we really have stuff like shipbuilding facilities anymore because of capable competition.
EDITEDIT: That's Denmark's situation. Heavy industry, which is impossible in Denmark due to capable competition with raw materials, is more possible in Sweden and Norway, yet Norway is colder and Sweden is too, other than the region near Scania.
EDITEDITEDIT: Don't misunderstand me, the US are doing okay. They can do better. Wealth redistribution to increase demand serves all of society. No wealth redistribution is terrible for an economy. It needs the fluctuation of money to live and breathe.