Refer to the passage below and then answer the question afterwards in the same language as the passage:

Passage: Asimov was an able public speaker and was regularly paid to give talks about science. He was a frequent fixture at science fiction conventions, where he was friendly and approachable. He patiently answered tens of thousands of questions and other mail with postcards and was pleased to give autographs. He was of medium height (5 ft 9 in (1.75 m)), stocky, with – in his later years – "mutton-chop" sideburns, and a distinct New York accent. He took to wearing bolo ties after his wife Janet objected to his clip-on bow ties. His physical dexterity was very poor. He never learned to swim or ride a bicycle; however, he did learn to drive a car after he moved to Boston. In his humor book Asimov Laughs Again, he describes Boston driving as "anarchy on wheels."Asimov's wide interests included his participation in his later years in organizations devoted to the comic operas of Gilbert and Sullivan and in The Wolfe Pack, a group of devotees of the Nero Wolfe mysteries written by Rex Stout. Many of his short stories mention or quote Gilbert and Sullivan. He was a prominent member of The Baker Street Irregulars, the leading Sherlock Holmes society, for whom he wrote an essay arguing that Professor Moriarty's work "The Dynamics of An Asteroid" involved the willful destruction of an ancient civilized planet. He was also a member of the all-male literary banqueting club the Trap Door Spiders, which served as the basis of his fictional group of mystery solvers, the Black Widowers. He later used his essay on Moriarty's work as the basis for a Black Widowers story, "The Ultimate Crime", which appeared in More Tales of the Black Widowers.In 1984, the American Humanist Association (AHA) named him the Humanist of the Year. He was one of the signers of the Humanist Manifesto. From 1985 until his death in 1992, he served as president of the AHA, an honorary appointment. His successor was his friend and fellow writer Kurt Vonnegut. He was also a close friend of Star Trek creator Gene Roddenberry, and earned a screen credit as "special...

Question: When was this person no longer alive?
1992