56% (1991)

30% (1994)

43% (1993)

50% (1992)

48% (1995)

50% (1990)

47% (1998)

33% (1992)

0% (1990)

50% (1995)

75% (1991)

10% (1997)

40% (1995)

57% (1998)

40% (1995)

47% (1992)

10% (1993)

66% (2001)

61% (1997)

50% (1997)