Question: What year was the actor who played a 17-year-old boy in the film "17 Again" born?

Context paragraphs:
Murder of David Reed: David Wellington Reed (17 January 1972 – 21 August 1985) was a 13-year-old boy in the seventh grade at Schuylkill Haven Area Middle School, who was murdered in 1985 by then 20-year-old Joseph "Joe" Geiger in Schuylkill Haven, Pennsylvania, United States over Geiger's stolen illegally grown cannabis plants.  Geiger blamed Reed for the disappearance of the drug.  Friends, family, and teachers remember Reed as an outgoing person who aspired to fly.

Thai Boxing: A Fighting Chance: Thai Boxing: A Fighting Chance is a 2002 documentary by independent producer Susanne Cornwall Carvin.  The hour-long film, narrated by British actor Jason Statham, follows the lives of three boxers as they prepare to compete in muay thai, also known as Thai boxing.  One character, Sam Sheridan, is a 27-year-old Harvard University graduate who has traveled to Thailand to learn the art of muay thai from Apidej Sit-Hirun, a retired boxing champion.  The second primary character, Gong-Prai Sorjintana, is a 13-year-old boy from the town of Ayutthaya; his mother runs a boxing camp for troubled teenagers and he's fighting to raise money for university.  The third character, Boon-Term Kitmuti, is a 29-year-old mother of two children who wanted to box when she was younger, before muay thai was legal for women.  Now that there is an active muay thai league for women, she has decided to travel to Bangkok and learn the sport, despite the disapproval of her husband.  Her husband left because he didn't like women anymore.

Zac Efron: Zachary David Alexander Efron ( ; born October 18, 1987) is an American actor and singer.  He began acting professionally in the early 2000s, and rose to prominence in the late 2000s for his leading role in the "High School Musical" franchise (2006–2008).  During this time, he also starred in the musical film "Hairspray" (2007) and the comedy film "17 Again" (2009).  He has since appeared in films like "New Year's Eve" (2011), "The Lucky One" (2012), "Neighbors" (2014), "Dirty Grandpa" (2016), and "" (2016).

A Cold Wind in August: A Cold Wind in August (1961) is a low-budget independent drama film directed by Alexander Singer and adapted from the eponymous novel by Burton Wohl.  The film stars Lola Albright as a mentally unbalanced burlesque show stripper in her thirties who becomes involved in a torrid romance with a 17-year-old boy played by Scott Marlowe.  In reality, Marlowe was actually 28, only eight years Albright's junior.

17 Again (film): 17 Again is a 2009 American comedy film directed by Burr Steers.  The film follows 37-year-old Mike (Matthew Perry) who becomes a 17-year-old boy (Zac Efron) after a chance accident.  The film also features Leslie Mann, Thomas Lennon and Michelle Trachtenberg in supporting roles.  The film was released in the United States on April 17, 2009.

Jarno Elg: Jarno Sebastian Elg (born 1975) is a Finnish Satanist (portrayed as Devil worshipper by medias), who was sentenced to life in prison for murdering a 23-year-old man, eating some of the body parts and instigating others to participate in a ritual that included torturing the victim while listening to songs from "The Cainian Chronicle" album by the Norwegian black metal band Ancient on November 21, 1998, in Hyvinkää.  Elg's partners were 17-year-old Terhi Johanna Tervashonka from Järvenpää, a 20-year-old man from Mäntsälä and a 16-year-old boy from Kerava.

Whole New Thing: Whole New Thing is a 2005 Canadian dramatic film which was directed by Amnon Buchbinder.  The script is co-written by Amnon Buchbinder and Daniel MacIvor.  Filmed entirely on location in Mahone Bay and Halifax, Nova Scotia, during winter and over the course of 15 days, the film is an unconventional coming-of-age narrative of a 13-year-old boy, Emerson Thorsen (played by Aaron Webber).  Emerson lives in an isolated straw-bale house with his counter-cultural parents, Rog (Robert Joy) and Kaya (Rebecca Jenkins).  However, when Kaya decides that homeschooling provides too little structure for Emerson, she enrolls him at the local middle-school under the tuition of 43-year-old Don Grant (Daniel MacIvor).  Emerson, despite displaying a developed intellectual approach to sexuality, discovers the problems that come with developing a crush, and the taboo of this crush being his teacher.

Murder of Niklas P.: In the murder case of Niklas P., a 17-year-old boy from Bad Breisig, Rhineland-Palatinate, Germany, was knocked unconscious and then beaten to death by a group of young men while lying on the ground.  The crime happened in Bonn, Germany, on the night of 6 to 7 May 2016.  Niklas P. later died in hospital.  On 18 May, Walid S., a 20-year-old man, was arrested on suspicion of being the main perpetrator.  Two accomplices are still being sought by the police.  The case received extensive media attention in Germany.  Bonn police received 400,000 entries on their Facebook page.

Death of Setayesh Qorayshi: Setayesh Qorayshi (Persian: ستایش قریشی‎ ‎ ) was a 6-year-old Afghan girl who was raped and then killed by an Iranian 17-year-old boy.  This incident has raised widespread media attention in both Iran and Afghanistan.  Many users on social networks, either Iranian or Afghan, condemned the incident and expressed their sympathy with Setayesh's family.  After an unsuccessful attempt to burn the corpse in a bathtub full of acid, the 17-year-old killer then called his friend and asked him to help him in fading the corpse.  His friend, however, didn't help the killer and instead, he informed his own father.  His father in turn, called police and then the police arrested the killer.

Ma Mère: Ma Mère (English: My Mother ) is a French-Austrian-Portuguese-Spanish 2004 film about the incestuous relationship between a 17-year-old boy and his attractive, promiscuous, 43-year-old mother.  The film stars Isabelle Huppert, Louis Garrel and Emma de Caunes.  French director Christophe Honoré, who wrote the screenplay, based it on the controversial and posthumous 1966 novel of the same name by French author Georges Bataille.  Honoré shot the film on location on the island of Gran Canaria, Canary Islands, Spain.  Its dialogue is almost entirely in French with brief segments in Spanish, German and English.  Film distribution company TLA Releasing released "Ma Mère" in France, at the Cannes Film Market, on 13 May 2004.

Supporting paragraphs: 17 Again (film) Zac Efron
Answer: 1987