80% (1976)

70% (1990)

64% (2001)

0% (1990)

0% (1976)

54% (1973)

44% (1999)

90% (1961)

65% (1979)

0% (1986)

68% (1997)

62% (1992)

52% (1997)

0% (1985)

47% (1974)

0% (1962)

60% (1996)

0% (1960)

66% (1982)

70% (1963)