Question: In what year was the actor who played main character Malcolm on British sitcom Singles inducted into the American Theater Hall of Fame?

Context articles: Singles (TV series)
Harvey Fierstein
Kitty Carlisle
Marian Seldes
American Theater Hall of Fame
Roger Rees
Henry Hewes
John Lithgow
Elaine Stritch
Brian Murray (actor)

Singles is a British sitcom set in a singles bar produced by Yorkshire Television (a pilot episode having been produced by Thames Television in 1984).
 It aired for 3 series and 22 episodes on the ITV network between 1988 and 1991.
 Main character Malcolm, played by Roger Rees, was written out in the final series after Rees relocated to the United States, with Simon Cadell joining the cast in his place as Dennis Duval.
Harvey Forbes Fierstein (born June 6, 1954) is an American actor, playwright, and voice actor.
 Fierstein has won the Tony Award for Best Actor in a Play for his own play "Torch Song Trilogy" (about a gay drag-performer and his quest for true love and family) and the Tony Award for Best Actor in a Musical for playing Edna Turnblad in "Hairspray".
 He also wrote the book for the musical "La Cage aux Folles", for which he won the Tony Award for Best Book of a Musical, and wrote the book for the Tony Award-winning "Kinky Boots".
 He was inducted into the American Theater Hall of Fame in 2007.
Kitty Carlisle (born Catherine Conn; also known as Kitty Carlisle Hart; September 3, 1910April 17, 2007) was an American singer, actress and spokeswoman for the arts.
 She is best remembered as a regular panelist on the television game show "To Tell the Truth".
 Carlisle served 20 years on the New York State Council on the Arts.
 In 1991, she received the National Medal of Arts from President George H. W. Bush.
 Eight years later, in 1999, she was inducted into the American Theater Hall of Fame.
Marian Hall Seldes (August 23, 1928 – October 6, 2014) was an American stage, film, radio, and television actress whose career spanned over 60 years.
 A five-time Tony Award nominee, she won the Tony Award for Best Featured Actress in a Play for "A Delicate Balance" in 1967, and received subsequent nominations for "Father's Day" (1971), "Deathtrap" (1978–82), "Ring Round the Moon" (1999), and "Dinner at Eight" (2002).
 She also won a Drama Desk Award for "Father's Day".
 Her other Broadway credits included "Equus" (1974–77), "Ivanov" (1997), and "Deuce" (2007).
 She was inducted into the American Theater Hall of Fame in 1995 and received the Special Tony Award for Lifetime Achievement in 2010.
The American Theater Hall of Fame in New York City was founded in 1972.
 Earl Blackwell was the first head of the organization's Executive Committee.
 In an announcement in 1972, he said that the new "Theater Hall of Fame" would be located in the Uris Theatre (then under construction, now the Gershwin).
 James M. Nederlander and Gerard Oestreicher, who leased the theatre, donated the space for the Hall of Fame; Arnold Weissberger was another founder.
 Blackwell noted that the names of the first honorees would "be embossed in bronze-gold lettering on the theater's entrance walls flanking its grand staircase and escalator."
 The first group of inductees was announced in October 1972.
Roger Rees (5 May 1944 – 10 July 2015) was a Welsh actor and director, widely known for his stage work.
 He won an Olivier Award and a Tony Award for his performance as the lead in "The Life and Adventures of Nicholas Nickleby".
 He also received Obie Awards for his role in "The End of the Day" and as co-director of "Peter and the Starcatcher".
 Rees was posthumously inducted into the American Theater Hall of Fame, 16 November 2015.
Henry Hewes (April 9, 1917 – July 18, 2006) was the drama critic for the "Saturday Review" weekly literary magazine from 1955 to 1979.
 He was the first major critic to regularly review regional and international theater.
 His interest in regional theater led him to found the American Theater Critics Association, the Tony Award for regional theater, and the American Theater Wing's design awards, now called the Hewes Awards.
 In 2002, he was inducted into the American Theater Hall of Fame.
John Arthur Lithgow ( ; born October 19 , 1945) is an American actor, musician, singer, comedian, voice actor, and author.
 He has received two Tony Awards, six Emmy Awards, two Golden Globe Awards, three Screen Actors Guild Awards, an American Comedy Award, four Drama Desk Awards and has also been nominated for two Academy Awards and four Grammy Awards.
 Lithgow has received a star on the Hollywood Walk of Fame and has been inducted into the American Theater Hall of Fame.
Elaine Stritch (February 2, 1925 – July 17, 2014) was an American actress and singer, known for her work on Broadway.
 She made her professional stage debut in 1944 and appeared in numerous stage plays, musicals, feature films and television series.
 She was inducted into the American Theater Hall of Fame in 1995.
Brian Murray (born Brian Bell; September 10, 1937) is a South African actor and theatre director who was inducted into the American Theater Hall of Fame in 2004.