59% (1991)

30% (1974)

70% (1996)

55% (1978)

56% (1985)

48% (1980)

0% (1980)

45% (1979)

53% (1995)

77% (1987)

0% (1978)

33% (1979)

60% (1985)

64% (1991)

58% (1982)

65% (1994)

62% (1994)

40% (1988)

52% (1977)

62% (1991)