51% (1987)

53% (1967)

0% (1961)

52% (1988)

55% (1976)

70% (1987)

50% (1956)

55% (1991)

60% (1984)

53% (1965)

56% (1982)

0% (1973)

70% (1960)

62% (1979)

0% (1982)

56% (1946)

61% (1974)

53% (1990)

70% (1987)

60% (1963)