55% (1994)

65% (1998)

49% (2000)

48% (1994)

55% (2001)

56% (2003)

59% (1994)

60% (1989)

65% (1998)

40% (1993)

22% (1997)

54% (2000)

58% (1996)

0% (2001)

37% (1991)

70% (1995)

0% (1994)

40% (1990)

67% (1996)

30% (2002)