66% (1981)

59% (1979)

70% (1974)

61% (1977)

60% (1981)

66% (1981)

58% (1980)

41% (1964)

59% (1976)

51% (1990)

40% (1984)

57% (1983)

62% (1978)

53% (1981)

24% (1982)

52% (1982)

34% (1992)

59% (1974)

40% (1921)

57% (1977)