42% (1985)

59% (1982)

75% (1969)

50% (1981)

0% (1983)

60% (1968)

80% (1961)

50% (1971)

70% (1986)

80% (1968)

0% (1985)

0% (1987)

60% (1976)

59% (1966)

40% (1984)

0% (1987)

0% (1980)

0% (1975)

0% (1990)

54% (1961)