50% (1977)

50% (1991)

60% (1969)

58% (1985)

63% (1975)

0% (1970)

50% (1968)

67% (1959)

63% (1961)

55% (1963)

54% (2004)

58% (1981)

50% (1953)

50% (1962)

40% (1978)

0% (1987)

0% (1983)

55% (1965)

50% (1978)

50% (1947)