54% (1983)

70% (1993)

58% (1988)

63% (1979)

38% (1992)

35% (1983)

40% (1985)

20% (1987)

54% (1980)

48% (1982)

43% (1994)

66% (1981)

54% (1984)

0% (1988)

20% (1979)

55% (1990)

0% (1986)

60% (1979)