40% (1967)

64% (1984)

70% (1968)

52% (2010)

57% (1971)

69% (1978)

70% (1979)

55% (1984)

59% (1963)

57% (1979)

55% (1981)

58% (1979)

62% (1982)

10% (1985)

66% (1969)

62% (1971)

50% (1982)

55% (1985)

56% (1964)

60% (1977)