62% (1971)

64% (1964)

45% (1982)

60% (1964)

67% (2003)

67% (1987)

65% (1976)

56% (1985)

66% (1987)

67% (1960)

77% (1982)

71% (1992)

73% (1988)

65% (1956)

69% (1984)

67% (1966)

70% (1986)

65% (1982)

50% (1955)

48% (1992)