49% (1988)

0% (1973)

0% (1971)

50% (1966)

77% (1976)

0% (1982)

72% (1972)

60% (1981)

47% (1971)

54% (1982)

0% (1968)

0% (1964)

0% (1980)

78% (1988)

75% (1957)

50% (1969)

50% (1981)

50% (1968)

60% (1971)

68% (1970)