56% (1975)

44% (1973)

47% (1975)

55% (1973)

70% (1974)

57% (1974)

50% (1973)

51% (1975)

61% (1975)

66% (1977)

66% (1973)

49% (1974)

55% (1973)

0% (1967)

60% (1974)

50% (1982)

50% (1971)

40% (1975)

40% (1982)

42% (1976)