Pakistan became a member of International Atomic Energy Agency (IAEA) in_________?

Pakistan became a member of International Atomic Energy Agency (IAEA) in_________?

پاکستان _________ میں انٹرنیشنل اٹامک انرجی ایجنسی کا رکن بنا؟
Explanation

The International Atomic Energy Agency is an international organization that seeks to promote the peaceful use of nuclear energy.

Inhibit its use for any military purpose, including nuclear weapons. 

Headquarters: Vienna, Austria

Founded: July 29, 1957