64% (1971)

10% (1965)

70% (1971)

0% (1978)

70% (1976)

18% (1972)

0% (1959)

0% (1960)

0% (1987)

78% (1987)

80% (1982)

0% (1958)

0% (1972)

90% (1985)

10% (1990)

100% (1966)

95% (1982)

85% (1980)

77% (1979)

50% (1990)