54% (1999)

45% (2005)

64% (1975)

32% (1976)

57% (1968)

59% (1980)

0% (1969)

65% (1967)

53% (1977)

43% (1973)

70% (1978)

0% (1979)

0% (1980)

58% (1969)

80% (1981)

70% (1972)

58% (1967)

0% (1977)

40% (1970)

25% (1976)