60% (1978)

64% (1985)

69% (1972)

20% (1979)

50% (1978)

60% (1977)

60% (1976)

80% (1981)

44% (1978)

59% (1975)

40% (1977)

80% (1992)

0% (1969)

80% (2006)

0% (1971)

70% (1971)

0% (1968)