62% (1986)

50% (1979)

30% (1986)

35% (1977)

65% (1966)

66% (1983)

0% (1988)

42% (1979)

60% (1979)

59% (1988)

60% (1969)

50% (1980)

0% (1981)

40% (1988)

0% (1986)

35% (1986)

60% (1986)

50% (1976)

50% (1977)

0% (1978)