60% (1973)

63% (1972)

0% (1981)

64% (1974)

55% (1987)

64% (1977)

70% (1979)

0% (1981)

59% (1982)

66% (1973)

50% (1979)

49% (1982)

55% (1979)

51% (1986)

60% (1982)

54% (1984)

69% (1974)

75% (1993)

83% (1981)

50% (1981)