56% (1966)

30% (1988)

80% (1986)

74% (1981)

42% (1982)

50% (1964)

50% (1982)

50% (1982)

47% (1965)

55% (1970)

60% (1963)

40% (1983)

52% (1969)

50% (1962)

50% (1980)

50% (1990)

50% (1990)

65% (1969)

46% (1971)

50% (1955)