76% (1984)

73% (1985)

69% (1984)

65% (1978)

76% (1980)

69% (1986)

76% (1982)

63% (1979)

60% (1981)

59% (1974)

67% (1977)

71% (1980)

100% (2021)

69% (1977)

58% (1976)

62% (1971)

55% (1985)

50% (1980)

64% (1989)

60% (1982)