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18 June 1970–1978 (as a TV production company from 18 June 1970 to 29 March 1997)
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15 April 1990–31 October 1994
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1 November 1994–29 March 1997
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30 March 1997–March 1999
(as a TV channel since 30 March 1997)
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March–September 1999
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September 1999–January 2000
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January–10 September 2000
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11 September 2000–Spring 2001
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Summer 2001–January 2002
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January–3 March 2002
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4 March–15 September 2002
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16 September 2002–October 2003
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October 2003–7 March 2004
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8 March–31 October 2004
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1 November–31 December 2004
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1 January 2005–22 January 2006
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23 January–11 October 2006
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12 October–31 December 2006
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1 January 2007–17 February 2008
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18 February–27 April 2008
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28 April–25 June 2008
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26 June–5 October 2008
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20 October 2008–January 2009
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January–15 February 2009
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16 February–5 July 2009
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6 July–13 September 2009
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14 September 2009–31 January 2010
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22 February 2010–13 February 2011
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14 February–6 March 2011
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7 March 2011–19 February 2012
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20 February–April 2012
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April 2012–March 2013
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March 2013–3 February 2014
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4 February–21 September 2014
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22 September 2014–14 April 2015
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15 April 2015–10 February 2016
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11 February–9 August 2016
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10 August–30 October 2016
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31 October 2016–30 October 2017
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31 October 2017–12 February 2018
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13 February–3 July 2018
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4 July 2018–1 September 2019
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2 September 2019–6 January 2020
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7 January–25 February 2020
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26 February 2020–7 November 2021
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8 November 2021–18 January 2022
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19 January–21 May 2022
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22 May 2022–present
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