57% (1990)

62% (1998)

33% (1992)

0% (1991)

53% (1991)

50% (1995)

20% (1993)

48% (1999)

0% (1990)

65% (2001)

57% (1996)

40% (1995)

54% (1993)

0% (1995)

51% (1993)

70% (1994)

57% (1998)

52% (1990)

30% (1996)

10% (1993)