93% (1981)

0% (1978)

63% (1981)

0% (1979)

50% (1980)

70% (1979)

0% (1980)

0% (1981)

75% (1985)

80% (1984)

78% (1980)

60% (1981)

85% (1979)

63% (1984)

0% (1979)

35% (1980)

85% (1980)

0% (1979)

20% (1979)

70% (1984)