I wonder if someone can calculate the actual age of dragons. resurrection due to Alduin means, I think, that they continue their actual age. rather than restarting.

I am especially interested in:
Alduin
Ahbiilok
Mirmulnir
Paarturnax
Durnevhiir
Odahviing
Grahkrindrog
Krahjotdaan
Naafalirgus
Vuljotnaak
Viinturuth
Sahloknir

Alduin is the oldest so pretty much almost as old as Akatosh but supposedly most of the dragons date back to before the first era iirc.