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5 May 1960–31 August 1971
(as a TV production company from 5 May 1960 to 31 August 1961 / as a TV channel since 1 September 1961)
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1 September 1971–31 August 1989
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1 September 1989–5 September 1993
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6 September 1993–4 September 1994
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5 September 1994–31 August 1995
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1 September 1995–31 December 1996
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15 January 1997–3 October 1998
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4 October–14 November 1998
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15–28 November 1998
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29 November 1998–7 November 1999
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8 November 1999–31 December 2000
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1 January–10 August 2001
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11 August 2001–27 October 2002
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28 October 2002–31 August 2003
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1 September 2003–31 October 2004
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1 November 2004–15 January 2006
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16 January–12 November 2006
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13 November 2006–8 April 2010
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9 April 2010–13 January 2013
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14 January 2013–present
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