53% (1977)

45% (2005)

54% (1999)

25% (1976)

80% (1981)

62% (1967)

0% (1982)

43% (1973)

58% (1969)

40% (1970)

0% (1976)

59% (1980)

70% (1978)

64% (1975)

57% (1968)

20% (1975)

70% (1968)

0% (1975)

20% (1976)

0% (1967)