88% (1986)

67% (1989)

74% (1987)

83% (1973)

94% (1980)

70% (1994)

78% (1987)

71% (1972)

47% (1982)

78% (1974)

79% (1978)

70% (1971)

0% (1983)

0% (1982)

83% (1975)

60% (1981)

85% (1971)

0% (1973)

0% (1978)

90% (1974)