44% (1982)

70% (1997)

70% (1964)

50% (1989)

52% (1990)

56% (1963)

0% (1968)

63% (1969)

80% (1975)

42% (1979)

52% (1968)

53% (1971)

56% (1973)

62% (1975)

0% (1995)

63% (1957)

44% (1954)

58% (1961)

50% (1966)

60% (1965)