40% (2010)

33% (2000)

20% (2000)

52% (1997)

28% (2007)

29% (2007)

30% (1999)

43% (1999)

33% (2001)

31% (2000)

20% (1992)

25% (2000)

30% (1995)

40% (1997)

0% (1997)

10% (2004)

0% (1995)

0% (1995)

10% (2004)

0% (1995)