73% (1966)

61% (1990)

55% (1968)

56% (1967)

61% (1968)

71% (1955)

65% (1966)

65% (1996)

48% (1980)

0% (1963)

50% (1974)

58% (1969)

20% (1985)

73% (1953)

50% (1996)

66% (1951)

54% (1986)

59% (1958)

54% (1964)

60% (1964)