51% (1982)

79% (1985)

48% (1982)

72% (1984)

58% (1981)

68% (1987)

55% (1983)

57% (1984)

68% (1981)

67% (1983)

18% (1990)

60% (1993)

61% (1988)

0% (1984)

80% (1984)

67% (1983)

50% (1983)

23% (1988)

60% (1986)

63% (1984)