And thinking about that list, only under 10 are really making their career in NHL and possibly other 10 have a slight chance.
NHL (pre-2010 as I think it's still a little early for the ones drafted after that):
Korpikoski
Rask
Joensuu
Vatanen
But even some of those not in the NHL are decent players as far as Finns go, like Lepistö, Osala, Koskinen and Lehterä, perhaps you can put even Nokelainen in this group.
23 Finns were drafted in the top 120 between 2004 and 2009 and approximately 9 of them can still be considered at least somewhat relevant. That's ~39%, which is not that great but it could be far worse. Only 17% of them are now in the NHL though, which is bad.
39% out of the 21 players drafted in the top 120 between 2010 and 2013 would equal to around 8 relevant players, NHL or Europe. So far I would only be willing to forget about Ruuttu, Gibson and Perhonen, and even Gibson might end up a decent Euro goalie someday. My bold guess is that more than 8 of them will still be relevant in a few years and that more than 5 of them will still be in the NHL.