60% (1984)

65% (1981)

63% (1978)

72% (1982)

0% (1979)

50% (1998)

0% (1959)

76% (1987)

70% (1977)

80% (1994)

64% (1991)

50% (1983)

60% (1977)

83% (1996)

30% (1999)

52% (1980)

65% (1968)

60% (1986)

0% (1982)

57% (1983)