Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : The Soviet RPG-22 Netto is a one-shot disposable anti-tank rocket launcher first deployed in 1985, based on the RPG-18 rocket launcher, but firing a larger 72.5 mm fin stabilised projectile.
Question : In what year did RPG-22 enter service?
Solution:
1985