system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: Jim Robson OBC (born January 17, 1935) is a former radio and television broadcaster who was the play-by-play announcer of the Vancouver Canucks' games from 1970 to 1999.


Question: Extract all the years from the following text.


assistant
1935, 1970, 1999