63% (1963)

61% (1970)

0% (1976)

45% (1972)

50% (1976)

55% (1973)

51% (1982)

54% (1974)

61% (1979)

61% (1979)

50% (1963)

64% (1976)

50% (1965)

67% (1981)

77% (1992)

67% (1970)

52% (1979)

0% (1964)

55% (1965)

10% (1986)