74% (1981)

50% (1982)

30% (1988)

56% (1966)

50% (1982)

40% (1983)

52% (1969)

50% (1964)

55% (1970)

65% (1969)

50% (1990)

80% (1986)

50% (1960)

47% (1965)

42% (1982)

53% (1961)

50% (1955)

50% (1990)

50% (1962)

50% (1980)