62% (1987)

78% (1999)

83% (2001)

57% (1999)

71% (1998)

0% (1986)

70% (1997)

82% (1995)

65% (1996)

60% (1998)

0% (1988)

67% (1996)

67% (1996)

55% (1987)

0% (1994)

73% (1987)

0% (1996)

60% (1995)

80% (2000)

70% (1984)