48% (1982)

51% (1964)

43% (1975)

51% (2008)

33% (1980)

49% (1990)

50% (1975)

57% (1979)

50% (1977)

20% (1976)

0% (1976)

50% (1969)

50% (1985)

20% (1991)

50% (1975)

60% (1982)

0% (1979)

0% (1976)

40% (1977)

35% (1974)