66% (1973)

56% (1973)

51% (1973)

66% (1977)

50% (1975)

50% (1974)

47% (1975)

57% (1974)

44% (1973)

56% (1975)

70% (1974)

61% (1975)

50% (1982)

50% (1971)

0% (1975)

40% (1982)

46% (1978)

60% (1974)

42% (1976)

55% (1973)