38% (1992)

58% (1988)

63% (1979)

52% (1983)

37% (1985)

20% (1987)

48% (1982)

43% (1994)

0% (1988)

60% (1979)

52% (1980)

55% (1990)

54% (1984)

66% (1981)

35% (1983)

20% (1979)