2005 | 3 Episodes
Season 0 of 30 Rock premiered on June 27, 2005.
2006 | 21 Episodes
Season 1 of 30 Rock premiered on October 11, 2006.
2007 | 15 Episodes
Season 2 of 30 Rock premiered on October 4, 2007.
2008 | 22 Episodes
Season 3 of 30 Rock premiered on October 30, 2008.
2009 | 22 Episodes
Season 4 of 30 Rock premiered on October 15, 2009.
2010 | 23 Episodes
Season 5 of 30 Rock premiered on September 23, 2010.
2012 | 22 Episodes
Season 6 of 30 Rock premiered on January 12, 2012.
2012 | 13 Episodes
Season 7 of 30 Rock premiered on October 4, 2012.
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