With regard to the Y-chromosome, the most common haplogroups of the Finns are N1c (58%), I (29%), R1a (7.5%) and R1b (3.5%).[39] Haplogroup N1c, which is found only in a few countries in Europe (Latvia, Lithuania, Estonia, Finland and Russia), is a subgroup of the haplogroup N (Y-DNA) distributed across northern Eurasia and estimated in a recent study to be 10,000–20,000 years old and suggested to have entered Europe about 12,000–14,000 years ago from Asia.[40]
http://en.wikipedia.org/wiki/Finns#cite_note-40