50% (1986)

0% (1991)

59% (1993)

83% (1974)

35% (1994)

55% (1979)

37% (1986)

60% (1996)

0% (1992)

53% (1990)

60% (1971)

60% (1978)

70% (1995)

65% (1984)

30% (1987)

100% (1986)

58% (1981)

70% (1978)

49% (1991)

50% (1989)