Question: What year did the fifth season of the show Jennette McCurdy is best known for her role on begin airing?

Context articles: ICarly (season 2)
ICarly (season 3)
Best Player
ICarly (season 6)
ICarly (season 7)
Jennette McCurdy
What's Next for Sarah?
ICarly (season 5)
ICarly (season 4)
List of iCarly characters

The second season of "iCarly" aired on Nickelodeon from September 27, 2008 to August 8, 2009.
 The season continues the stories of Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy), and Freddie Benson (Nathan Kress) as they produce their own web show called "iCarly."
 Jerry Trainor co-stars as Carly's big brother Spencer.
 This season is the first to have a major plot twist, as it sees Sam and Freddie sharing their first kiss, just to avoid the frustration of not having a first kiss.
 This is followed by them becoming somewhat closer.
 This season contained the special "iChristmas".
 The second season consisted of 45 episodes, with 25 of them airing as part of the second season before the remaining 20 were marketed as the third season.
The third season of "iCarly" aired on Nickelodeon from September 12, 2009 to June 26, 2010.
 The season features Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy) and Freddie Benson (Nathan Kress) as they continue their own Web Show called iCarly.
 Jerry Trainor co-stars as Carly's big brother, Spencer Shay.
 This season was the result of split within the second season production of 45 episodes whereas 20 remaining episodes were marketed as the show's third season.
 When released to DVD, "iThink They Kissed" and "iCook" were featured on the "iCarly Season 2: Volume 2" DVD, while the rest of the season is released as "iCarly Season 2: Volume 3".
 This season had the specials "iThink They Kissed", "iMove Out", "iQuit iCarly" "iSaved Your Life", "iSpace Out", "iBloop" "iWon't Cancel the Show" and "iPsycho".
 A few episodes this season and last season were released on the "iCarly Collection" DVD that was released on July 2011.
Best Player is a 2011 television film that was released on March 12, 2011 starring Jerry Trainor as Quincy "Q" Johnson and Jennette McCurdy as Christina "Prodigy" Saunders, two stars from the hit Nickelodeon show "iCarly".
 Filming started on October 24, 2009 in Vancouver, British Columbia, Canada and wrapped up production on November 18, 2009.
The sixth season of "iCarly" began airing on Nickelodeon on March 24, 2012 and ended on June 9, 2012.
 This season features Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy), Freddie Benson (Nathan Kress) and Gibby Gibson (Noah Munck) as their web show, "iCarly", is becoming more popular worldwide.
 This is by far the shortest season of "iCarly" and the first since Season 1 to not have a special.
The seventh and final season of "iCarly" began airing on Nickelodeon on October 6, 2012.
 This season features Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy), Freddie Benson (Nathan Kress) and Gibby Gibson (Noah Munck) as their web show, "iCarly", is becoming more popular worldwide.
Jennette McCurdy (born June 26, 1992) is an American actress, producer, screenwriter, and singer.
 She is best known for her role as Sam Puckett on the Nickelodeon sitcom "iCarly" and its spin-off series "Sam & Cat".
 She has also appeared in a number of television series, including "Victorious", "Zoey 101", "True Jackson VP", "Malcolm in the Middle", and "Lincoln Heights", and has also produced, written, and starred in her own online series titled "What's Next for Sarah?
".
 Since May 2015, she has starred in the Netflix/City drama series "Between" as Wiley Day.
What's Next for Sarah?
 is an American web series on Vimeo.
 It premiered on August 13, 2014, and was created by and stars Jennette McCurdy in the lead role as Sarah Bronson.
 Sarah is an actress whose hit show got cancelled and subsequently her life gets even worse; her boyfriend breaks up with her and so instead of acting she wants to meet the real world.
The fifth season of "iCarly" began airing on Nickelodeon on August 13, 2011 and finished its run on January 21, 2012.
 This season features Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy), Freddie Benson (Nathan Kress) and Gibby Gibson (Noah Munck) as their web show, "iCarly", is becoming more popular worldwide, with Sam and Freddie now as a confirmed couple, until the episode, "iLove You".
 Jerry Trainor co-stars as Carly's older brother Spencer, and Noah Munck co-stars as Gibby.
 This season had the specials "iLost My Mind", "iDate Sam & Freddie", "iBloop 2: Electric Bloopaloo", "iStill Psycho, and "iMeet the First Lady".
The fourth season of "iCarly" began airing on Nickelodeon July 30, 2010, and ended on June 11, 2011.
 The season features Carly Shay (Miranda Cosgrove), Sam Puckett (Jennette McCurdy) and Freddie Benson (Nathan Kress) as their own Web Show iCarly is becoming more popular worldwide.
 Jerry Trainor co-stars as Carly's big brother Spencer.
 Noah Munck joins the main cast this season as Gibby Gibson.
 The specials of the season include "iGot a Hot Room", "iSam's Mom", "iDo", "iStart a Fan War", "iOMG", and "iParty With Victorious".
The Nickelodeon sitcom "iCarly" centers on Carly Shay, who creates her own web show with her best friends Sam and Freddie.
 The series stars Miranda Cosgrove as Carly, Jennette McCurdy as Sam, Nathan Kress as Freddie, Jerry Trainor as Spencer, and Noah Munck as Gibby.
 The series was created by Dan Schneider, who also serves as executive producer.