64% (1981)

57% (1972)

60% (1984)

67% (1979)

63% (2006)

10% (1985)

63% (1974)

66% (1969)

64% (1978)

67% (1982)

63% (1977)

63% (1967)

30% (1984)

58% (1971)

69% (1971)

65% (2011)

60% (1973)

58% (2003)

59% (1980)

63% (1970)