50% (1953)

0% (1976)

50% (1998)

40% (1979)

72% (1972)

62% (1958)

57% (1970)

50% (1983)

60% (1970)

0% (1992)

51% (1971)

65% (1990)

60% (1972)

75% (1952)

0% (1989)

50% (1978)

50% (1959)

63% (1968)

44% (1988)

50% (1985)