66% (1977)

74% (1964)

72% (1982)

70% (1969)

62% (1967)

64% (1980)

54% (1999)

72% (1974)

65% (1979)

64% (1976)

67% (1968)

71% (1970)

65% (1967)

66% (1982)

50% (1966)

57% (1977)

65% (1979)

67% (1976)

51% (1978)

77% (1987)