52% (1992)

40% (2001)

49% (1994)

22% (2006)

20% (1998)

29% (1989)

47% (1996)

55% (1990)

52% (2002)

30% (2001)

0% (2000)

29% (2003)

0% (1996)

13% (1997)

14% (1994)