60% (1978)

64% (1985)

70% (1972)

52% (1978)

62% (1977)

61% (1976)

58% (1975)

44% (1978)

20% (1979)

70% (1971)

80% (1981)

0% (1969)

0% (1971)

40% (1977)

80% (2006)

0% (1968)

80% (1992)