40% (1993)

53% (2001)

30% (2001)

43% (1995)

57% (1992)

28% (2000)

50% (1996)

72% (1996)

30% (1994)

50% (2001)

0% (1989)

58% (1994)

40% (1994)

59% (1999)

57% (1998)

15% (1999)

50% (1992)

53% (2000)

63% (1997)

45% (2000)