46% (2005)

59% (1980)

53% (1999)

60% (1967)

57% (1968)

20% (1976)

43% (1977)

70% (1978)

53% (1967)

25% (1976)

80% (1981)

0% (1968)

0% (1982)

30% (1976)

53% (1977)

58% (1969)

64% (1975)

0% (1969)

0% (1979)

0% (1968)