1. 1970 General Election
2. February 1974 General Election
3. October 1974 General Election
4. 1979 General Election
5. 1983 General Election
6. 1987 General Election
7. 1992 General Election
8. 1997 General Election
9. 2001 General Election
10. 2005 General Election
11. 2010 General Election
12. 2015 General Election