Question: In what year was the actor born who appeared in both Assault on Precinct 13 and every Rocky installment?

Context articles: Assault on Precinct 13 (1976 film)
The Nest (2002 film)
Assault on Precinct 13 (2005 film)
Darwin Joston
Laurie Zimmer
Martin West (actor)
Tony Burton
Nancy Kyes
Austin Stoker
Jasmin Geljo

Assault on Precinct 13 is a 1976 American independent action thriller film written, directed, scored and edited by John Carpenter.
 It stars Austin Stoker as a police officer who defends a defunct precinct against an attack by a relentless criminal gang, along with Darwin Joston as a convicted murderer who helps him.
 Laurie Zimmer and Tony Burton co-star as other defenders of the precinct.
The Nest (2002), also known as Nid de guêpes, is a French action/thriller movie, co-written and directed by Florent Emilio Siri.
 The literal translation of the French title is "Wasp's Nest."
 The film is quasi-remake of the 1976 film, "Assault on Precinct 13," which in turn was inspired by 1959's "Rio Bravo."
Assault on Precinct 13 is a 2005 French-American action thriller film directed by Jean-François Richet, starring Ethan Hawke and Laurence Fishburne.
 The cast also includes John Leguizamo, Maria Bello, Ja Rule and Drea de Matteo.
 It is a loose remake of John Carpenter's 1976 film of the same name, with an updated plot.
Francis Darwin Solomon (December 9, 1937 – June 1, 1998) was an American actor known professionally as Darwin Joston (sometimes credited as Darwin Jostin during the early years of his career).
 Joston began his career as a New York stage actor, and he appeared in many popular television shows during the 1960s, early 1970s, and mid-1980s, but he is best known for his performances in independent films that later achieved cult status, particularly "Assault on Precinct 13".
Laurie Zimmer (also credited as Laura Fanning) is an American former actress best known for her role as Leigh, the courageous secretary of the besieged police station, Precinct 9, Division 13, in John Carpenter's 1976, Howard Hawks-inspired action film, "Assault on Precinct 13".
Martin West (born Martin Weixelbaum, August 28, 1937 in Southampton, New York, USA) is an American actor of film and television best known for playing the grieving father Lawson in "John Carpenter's Assault on Precinct 13" as well as the lead role in "Freckles".
 He is also known for playing roles in the soap opera's "General Hospital" as Dr Phil Brewer and "As the World Turns" as Donald "Don" Hughes (he was the fifth actor to play both of these roles).
 His work also includes appearances in films such as "Soldier Blue" and "Mac and Me" and as guest star in television programs such as "The Invaders" and "Matlock".
 West's final acting appearance to date was in an episode of "The New Adam-12" in 1990.
Anthony "Tony" Burton (March 23, 1937 – February 25, 2016) was an American actor, boxer, and football player.
 He was known for his role as Tony "Duke" Evers in the "Rocky" franchise.
 He, Sylvester Stallone and Burt Young are the only actors who have appeared in every Rocky installment (not counting "Creed").
Nancy Louise Kyes (born December 19, 1949) is an American film and television actress.
 In most of her film appearances, she is credited under her stage name Nancy Loomis.
 She is best known for her role as Annie Brackett in "Halloween" (1978) and the sequel "Halloween II" (1981), as well as roles in two of John Carpenter's films: Julie in "Assault on Precinct 13" (1976) and Sandy Fadel in "The Fog" (1980).
Austin Stoker (born October 7, 1943) is a Trinidadian-American actor known for his role as Lt. Ethan Bishop, the police officer in charge of the besieged Precinct 9, Division 13, in John Carpenter's Howard Hawks-inspired, 1976 film, "Assault on Precinct 13".
 This was one of the few heroic starring roles for an African-American actor in an action film of the 1970s outside of the blaxploitation genre.
Jasmin Geljo (born September 18, 1959) is a Bosnian-Canadian actor.
 He is best known for his roles on Cube Zero as Ryjkin and in the films "Land of the Dead", "Assault on Precinct 13" and "The Sentinel".