Q: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Passage: Ronnie Barker and Ronnie Corbett met in 1963 at the Buckstone Club in the Haymarket, London, where Corbett was serving drinks between acting jobs. At the time, Barker was beginning to establish himself as a character actor in the West End and on radio. They were invited by David Frost to appear in his new show, The Frost Report, with John Cleese, but the pair's big break came when they filled in, unprepared and unscripted, for eleven minutes during a technical hitch at a British Academy of Film and Television Arts awards ceremony at the London Palladium in 1970. In the audience was Bill Cotton, the Head of Light Entertainment for the BBC, and Sir Paul Fox, the Controller of BBC1. Cotton was so impressed by the duo that he turned to Fox and asked: "How would you like those two on your network?" Unbeknownst to them the pair had just had the renewal of their contract declined by London Weekend Television of rival network ITV, and so were free to change channels. Barker and Corbett were given their own show by the BBC.
Link Information: he Frost Report was a satirical television show hosted by David Frost. It ran for 28 episodes on the BBC from 10 March 1966 to 26 December 1967. It introduced John Cleese, Ronnie Barker, and Ronnie Corbett to television, and launched the careers of other writers and performers.

Answer: 1966
A:
What year did Barker and Corbett appear on The Frost Report?