57% (1941)

60% (1978)

60% (1967)

85% (1981)

30% (1986)

75% (1988)

30% (1982)

50% (1955)

0% (1988)

55% (1974)

65% (1969)

0% (1985)

55% (1982)

30% (1982)

60% (1963)

70% (1981)

60% (1983)

58% (1981)

70% (1987)

30% (1977)