55% (1965)

51% (1982)

37% (1996)

63% (1963)

65% (1976)

54% (1974)

67% (1981)

58% (1978)

62% (1979)

45% (1972)

60% (2007)

0% (1969)

0% (1964)

50% (1969)

46% (1977)

54% (1979)

10% (1986)

67% (1970)

80% (1992)

0% (1978)