here we go for my list... this is just an approximate percentage for now (1% is less than or equal to 1%)
English - 45%
Korean - 25%
Japanese - 12%
German - 8%
Finnish - 1%
Spanish - 2% (rata blanca, mägo de oz, the mars volta)
Swedish - 1% (Vintersorg)
Icelandic - 1% (Sigur rós)
Faroese - 1% (Týr)
Danish - 1% (Under byen)
Norwegian - 1% (Lumsk)
Russian - 1% (Arija, epidemija)
Portuguese - 1%