50% (1966)

59% (1974)

60% (1969)

59% (1959)

53% (1968)

65% (1997)

71% (1963)

50% (1980)

48% (1970)

50% (1989)

28% (1994)

50% (1968)

50% (1953)

72% (1982)

53% (1975)

76% (1978)

50% (1982)

50% (1962)

46% (2002)

51% (1969)