|DVD Title|Discs|Year|No. of Ep.|DVD release Region 2|DVD release Region 4|
|---|---|---|---|---|---|
|Complete Series 1|2|1971|8|30 April 2007|4 July 2007|
|Complete Series 2|2|1972|8|2 July 2007|8 May 2008|
|Complete Series 3|2|1973–1974|8|17 March 2008|5 March 2009|
|Complete Series 4|2|1975|8|19 May 2008|6 August 2009|
|Complete Series 5|2|1976|8|15 June 2009|4 March 2010|
|Complete Series 6|2|1977–1978|8|22 February 2010|5 August 2010|
|Complete Series 7|2|1978–1979|8|17 May 2010|3 March 2011|
|Complete Series 8|2|1980|8|6 September 2010|2 June 2011|
|Complete Series 9|2|1981–1982|8|28 February 2011.|1 March 2012|
|Complete Series 10|2|1983–1984|6|9 May 2011.|5 September 2012|
|Complete Series 11|2|1985|5|25 July 2011.|3 April 2013|
|Complete Series 12|2|1985–1986|6|26 September 2011.|7 August 2013|
|The Christmas Specials|2|1973–1982-1984-1987|4|29 October 2007.|6 November 2008|
|The Complete Collection|27|1971–1987, 2010|96|24 September 2012.|2013|
|Two Ronnies In Australia|2|1986|6|—|28 June 2008|
|The Best of...Volume 1|1|1971–1984|1 Compilation|1 October 2001|4 March 2002|
|The Best of...Volume 2|1|1971–1985|1 Compilation|29 September 2003|17 March 2003|

Question: how many series had 8 episodes?
Answer: 9