56% (1985)

64% (1969)

59% (1980)

76% (1962)

50% (1984)

68% (1985)

68% (1981)

45% (1987)

60% (1992)

56% (1974)

20% (1991)

70% (1981)

58% (1965)

60% (1963)

56% (1977)

85% (2007)

35% (1978)

60% (1982)

37% (1973)

55% (1983)