58% (1975)

60% (1958)

60% (2000)

57% (1981)

50% (1976)

70% (1999)

50% (1977)

0% (1983)

64% (1983)

63% (1979)

71% (1970)

50% (1985)

58% (1979)

67% (1970)

50% (1984)

55% (1984)

70% (1973)

50% (1990)

73% (1980)

35% (1983)