- 1959[subject unknown]Independent
- 1960[subject unknown]Independent
- 1961[subject unknown]Independent
- 1962[subject unknown]Independent
- 1963[subject unknown]Independent
- 1964[subject unknown]Independent
- 1965[subject unknown]Independent
- 1966[subject unknown]Independent
- 1968[subject unknown]Independent
- 1987[subject unknown]Corporation Member
- 1988[subject unknown]Corporation Member
- 1989[subject unknown]Corporation Member
- 1990[subject unknown]Corporation Member
- 1991[subject unknown]Corporation Member
- 1992[subject unknown]Corporation Member
- 1993[subject unknown]Corporation Member
- 1994[subject unknown]Corporation Member
- 1995[subject unknown]Corporation Member
- 1996[subject unknown]Corporation Member
- 1997[subject unknown]Corporation Member
- 1998[subject unknown]Corporation Member
- 1999[subject unknown]Corporation Member
- 2000[subject unknown]Corporation Member