79% (1978)

80% (1968)

70% (1974)

82% (1978)

81% (1974)

0% (1967)

42% (2005)

84% (1973)

72% (1980)

76% (1975)

80% (1975)

56% (1973)

79% (1976)

45% (1971)

66% (1972)

0% (1969)

60% (1968)

50% (1970)

0% (1966)

70% (1966)