42% (1985)

60% (1968)

50% (1981)

54% (1961)

59% (1982)

40% (1984)

45% (1966)

54% (1954)

58% (1968)

0% (1987)

54% (1970)

0% (1972)

0% (1975)

75% (1969)

50% (1980)

60% (1976)

0% (1978)

50% (1971)

70% (1986)

0% (1980)