@bruces We (Norway) used to be 5, but now we're like 7 or something, and out of the list (Norway is the only one if the major Nordics that's out of the top five, in fact...).
So with Finland on top, and Norway out of the list, a case could be made that trees make you happy, but money doesn't!
@bruces I celebrated my brother in law's 60th in London a few weeks ago. We met up with all his Finnish mates and their partners from uni. They all seemed pretty happy, at the pub in central London, even before we went to the Indian restaurant and saw Moulin Rouge at the theatre followed by a few pints at the pub by Wellington station.
So on a straw poll, yeh, pretty happy people. Know how to have a party.