35% (1993)

53% (1992)

40% (1994)

50% (2001)

28% (2000)

25% (1996)

40% (1993)

79% (1990)

0% (1989)

45% (2000)

0% (1998)

72% (1996)

30% (1994)

53% (2000)

50% (2000)

50% (1996)

70% (1990)

57% (1993)

75% (1999)

0% (1992)