82% (1989)

83% (1977)

70% (1977)

75% (1977)

0% (1979)

58% (1984)

72% (1969)

76% (1971)

0% (1959)

50% (1998)

70% (1971)

56% (1977)

78% (1978)

50% (1976)

60% (1977)

50% (1983)

60% (1984)

73% (1979)

0% (1968)

68% (2003)