63% (1979)

58% (1988)

54% (1980)

55% (1983)

70% (1993)

38% (1992)

40% (1985)

22% (1981)

0% (1988)

43% (1994)

48% (1982)

59% (1990)

20% (1987)

66% (1981)

55% (1984)

20% (1979)

35% (1983)

60% (1979)

0% (1986)