Question: In which year was this Australian media personality, sports commentator, and former Australian rules football player, who appeared in a humorous TV advertising campaign by Meat and Livestock Australia mentioning the word "un-Australian," born?

Context paragraphs:
Nick Holland: Nick Holland (born 29 July 1974) is a former professional Australian rules football player who played 179 games for Australian Football League (AFL) club Hawthorn between 1994 and 2005, serving as Vice Captain between 1999 and 2003.  Holland is an AFL Rising Star Award winner, a best and fairest and leading goal kicker at Hawthorn and represented Australia in International Rules.  He is now a lawyer and media personality.

Brian Cook (football administrator): Brian Carlyle Cook (born 14 November 1955) is a Scottish-born Australian businessman and former Australian rules football player and coach who is the current Chief Executive Officer (CEO) of the Geelong Football Club in the Australian Football League (AFL).  Cook played for a number of different clubs in several Australian states and territories, including the Box Hill Football Club in the Victorian Football Association (VFA), the Melbourne Football Club in the Victorian Football League (VFL), and the East Perth and Subiaco Football Clubs in the Western Australian National Football League (WANFL), and later captain-coached the Ainslie Football Club in the Australian Capital Territory Football League (ACTFL).  After his retirement from coaching, Cook occupied positions with the Australian Sports Commission and the West Australian Football Commission, before being appointed CEO of the West Coast Eagles in 1990.  He quit this position in 1999 to take up the same role with Geelong.

Renee Tomkins: Renee Tomkins is a former Australian soccer player who last played for Western Sydney Wanderers in the Australian W-League, and a current Australian rules footballer.  In 2015, she juggled soccer and Australian rules football commitments, playing for Penrith Ramettes along with Marconi Stallions.  She retired from soccer in 2016, concentrating on Australian rules football.  Tomkins was selected in the AFL Sydney team and went on to play in their match against Adelaide at the Adelaide Oval before nominating for the inaugural AFLW national draft

Mark Lee (Australian rules footballer): Mark Lee (born 29 March 1959 in Mildura, Victoria), known affectionately as "The General" is a former Australian rules football player for the Richmond Football Club.  Recruited from Richmond’s country zone in Mildura, Lee played a couple of games in 1977 but took off the following year as the team’s regular ruckman, allowing David Cloke to become a centre-half-forward and solving a problem the team had had since the loss of Michael Green and Brian Roberts a few years beforehand.  He remained static in 1979, but the following year Lee moved into the elite of Australian Rules as his ability as a knock ruckman combined with the running power of fellow Mildura recruit Dale Weightman, Robert Wiley, Geoff Raines and Bryan Wood to give one of the most potent forward lines in Australian Rules history an abundance of ball.

Sam Kekovich: Sam Kekovich (born 11 March 1950) is an Australian media personality, sports commentator, Australian 'Lambassador' and former Australian rules football player.

Rex Hunt: Rex James Hunt (born 7 March 1949) is an Australian television and radio personality, and a former Australian rules football player.  He is also a veteran Australian rules football commentator known for his habit of making up quirky nicknames for players.  He has also been known around the world for fishing and wildlife programs on the Seven Network and overseas stations.  He is a former police officer who reached the senior rank of Sergeant in Victoria Police at age 30.  He also previously owned a restaurant, the "D'lish Fish" located in Port Melbourne.

Roger Rasheed: Roger Rasheed (born 10 March 1969) is a former Australian rules football player, tennis player, tennis coach, and tennis commentator.  Rasheed is best known as Grand Slam coach of Australian former World No. 1 Lleyton Hewitt, former French No. 1 Gaël Monfils, former World No. 5 Jo-Wilfried Tsonga, the Top 10 ATP Tour player Grigor Dimitrov and through ProTennisCoach.com.  In addition, Rasheed is a media personality on Channel Seven and is the founder of the Roger Rasheed Sports Foundation.

Tim Lane (journalist): Timothy "Tim" Lane (born 1952 in Launceston, Tasmania) is an award-winning and veteran Australian sports journalist and sports commentator.  He currently calls Australian rules football (AFL) matches for 3AW radio on Saturday and Sunday afternoons and writes for "The Age" newspaper.  Between 2003 and 2011 he was also a Network Ten commentator.  He is well known for commentating on a variety of sports, in particular AFL, Cricket and as a track and field commentator for both the Summer Olympics and Commonwealth Games.

Un-Australian: Un-Australian is an increasingly pejorative term used in Australia.  In modern usage, it has similar connotations to the United States term un-American, however the Australian term is somewhat older, being used as early as 1855 to describe an aspect of the landscape that was similar to that of Britain.  Its modern usage was popularised during the 1990s by Prime Minister John Howard and One Nation Party founder Pauline Hanson; however, Stanley Bruce used it in reference to striking workers in 1925 and Joseph Lyons during the 1930s to decry communists and migrants from non-British backgrounds.  In recent times, the word has been overused to the point of being a particular favourite of humourists and satirists.  It is used in a humorous TV advertising campaign by Meat and Livestock Australia, in which ex-AFL footballer Sam Kekovich declares that not including lamb in one's diet is "un-Australian".

Garry Lyon: Garry Peter Lyon (born 13 September 1967) is a former professional Australian rules football player and was captain of the Melbourne Football Club in the Australian Football League (AFL).  Since his retirement from football, he has been mainly an Australian rules football media personality, featuring on television, radio and in newspapers.  He has also coached during the International Rules Series.

Supporting paragraphs: Un-Australian Sam Kekovich
Answer: 1950