51% (1975)

55% (1973)

44% (1973)

66% (1977)

57% (1975)

47% (1975)

70% (1974)

57% (1974)

0% (1967)

61% (1975)

49% (1974)

66% (1973)

50% (1973)

55% (1973)

50% (1971)

40% (1982)

38% (1977)

50% (1982)

42% (1976)

45% (1974)