When was Premium Account option introduced?

Question

I was wondering when was option of buying/owning Premium Account introduced to Tibia?

Answer 1

On the 5th November 2001. 

remium Accounts are now available! You can upgrade your free account to a Premium Account at any time. Just log into your account page and click on "Get Premium Account". There you will also get more information about Premium Accounts and all supported payment methods. A Premium Account enables you to rent houses, to visit the new island Edron, to buy new spells, and to fight never seen creatures. Furthermore you can expect many new benefits for Premium Account players in the future. Nevertheless, everyone can continue to play Tibia with all old features for free. Enjoy the new Premium Accounts! Your CipSoft Team

Source. Tibia.com - Premium accounts available