61% (2002)

49% (1987)

60% (1984)

61% (1982)

69% (1983)

54% (1983)

0% (1986)

60% (1981)

75% (1988)

50% (1984)

30% (1985)

60% (1987)

64% (1984)

71% (1985)

60% (1985)

45% (1981)

70% (1984)

50% (1983)

77% (1984)

56% (1983)