59% (1979)

65% (1981)

69% (1974)

60% (1981)

62% (1978)

61% (1977)

51% (1990)

58% (1974)

41% (1964)

53% (1982)

59% (1976)

30% (1982)

58% (1980)

72% (1981)

40% (1992)

57% (1977)

56% (1982)

57% (1983)

50% (1915)

60% (1981)