64% (1975)

73% (1986)

84% (1973)

50% (1970)

64% (1976)

59% (1973)

55% (1971)

82% (1978)

68% (1973)

0% (1977)

78% (1971)

75% (1974)

33% (2004)

75% (1974)

56% (1973)

62% (1970)

0% (1973)

45% (1971)

35% (2007)

60% (1965)