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13 December 2004–7 February 2007
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8 February 2007–29 November 2009
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30 November 2009–31 January 2011
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1 February 2011–8 June 2015
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9 June 2015–30 September 2019
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1 October 2019–6 April 2020
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7 April 2020–present
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