80% (1976)

70% (1990)

62% (1992)

90% (1961)

66% (1963)

44% (1999)

47% (1974)

64% (2001)

0% (1986)

0% (1990)

65% (1982)

50% (1976)

0% (1986)

68% (1997)

62% (1990)

0% (1985)

0% (1974)

68% (1991)

0% (1962)

0% (1976)