60% (1986)

42% (1995)

74% (1991)

54% (1997)

64% (1990)

52% (1990)

66% (1998)

52% (1988)

0% (1988)

48% (1994)

40% (1996)

68% (1996)

60% (1984)

50% (1986)

58% (1997)

0% (1987)

44% (1988)

62% (1986)

61% (2005)

66% (1990)