Term of office: 28 November 1999 - 26 January 2000
Term of office: 26 January 2000
Term of office: 15 March 2000 - 28 February 2005
Term of office: 1 March 2005 - 30 April 2006
Term of office: 1 June 2006 - 5 December 2006
Term of office: 1 February 2007 -14 February 2011
Term of office: 15 February 2011 - 31 March 2012
Term of office: 1 April 2012 - 9 February 2017