20% (2011)

20% (2016)

60% (1999)

60% (1999)

66% (1992)

0% (1988)

0% (1997)

0% (1995)

73% (2002)

20% (1994)

0% (2001)

0% (2005)

20% (2009)

0% (2005)

0% (2009)

40% (1998)

0% (1999)

0% (1990)

0% (2001)

35% (2007)