70% (1973)

0% (1978)

64% (1998)

60% (1984)

65% (1991)

8% (1973)

70% (1981)

0% (1973)

55% (1973)

32% (1978)

63% (1989)

70% (1980)

60% (1980)

10% (1980)

40% (1971)

0% (1981)

80% (1974)

0% (1979)