58% (1965)

57% (1981)

60% (1961)

50% (1985)

63% (1991)

50% (2000)

63% (1969)

0% (1981)

0% (1963)

50% (1968)

58% (1977)

0% (1986)

50% (1968)

62% (1961)

60% (1965)

58% (1987)

56% (1993)

0% (1994)

50% (1970)

50% (1990)