80% (1976)

64% (2001)

70% (1990)

62% (1990)

44% (1999)

50% (1976)

0% (1986)

75% (1988)

60% (1978)

65% (1982)

60% (1996)

75% (1973)

69% (1998)

0% (1976)

54% (1973)

0% (1962)

0% (1977)

0% (1996)

47% (1974)

0% (1972)