0% (2006)

70% (1997)

67% (1997)

23% (1998)

0% (1999)

35% (1996)

10% (1999)

0% (1970)

10% (1997)

25% (1998)

0% (2001)

10% (1992)

30% (1994)

0% (1998)

35% (2003)

25% (2003)

10% (1998)

0% (1994)

0% (1996)

0% (1999)