55% (1988)

62% (1990)

58% (1988)

83% (1993)

75% (1985)

74% (1997)

68% (1995)

56% (1997)

78% (1991)

62% (1992)

67% (1997)

54% (2003)

68% (1997)

70% (1995)

80% (1993)

0% (2003)

0% (1989)