50% (2005)

82% (1989)

76% (1971)

72% (1969)

74% (1977)

60% (1977)

68% (2003)

50% (1983)

58% (1984)

83% (1977)

61% (1983)

78% (1978)

0% (1959)

70% (1977)

60% (1986)

60% (1984)

70% (1971)

67% (1986)

0% (1979)

0% (1981)