| 31st Parliament — 12 February 1978 to 18 September 1980 |
37th Parliament — 4 May 1993 to 30 November 1995 |
| 32nd Parliament — 25 November 1980 to 16 December 1982 |
38th Parliament — 30 April 1996 to 12 July 1998 |
| 33rd Parliament — 21 April 1983 to 24 October 1984 |
39th Parliament — 10 November 1998 to 27 September 2001 |
| 34th Parliament — 21 February 1985 to 5 June 1987 |
40th Parliament — 12 February 2002 to 30 August 2004 |
| 35th Parliament — 14 September 1987 to 22 December 1987 |
41st Parliament — 16 November 2004 to 17 October 2007 |
| 36th Parliament — 8 May 1990 to 18 December 1992 |
42nd Parliament — 12 February 2008 to 19 July 2010 |