90% (1988)

66% (1978)

80% (1973)

80% (1974)

90% (1988)

80% (1972)

70% (1978)

45% (1971)

90% (1981)

70% (1978)

55% (1972)

0% (1972)

80% (1980)

85% (1990)

80% (1982)

100% (1966)

0% (1991)

33% (1974)

73% (1984)

50% (1976)