55% (2000)

55% (1986)

30% (1996)

0% (1994)

30% (1999)

30% (1997)

20% (1997)

20% (1996)

10% (1998)

10% (1997)

0% (2008)

25% (2007)

20% (1997)

60% (2009)

0% (1997)