77% (2002)

70% (2007)

0% (2007)

0% (1997)

20% (2000)

60% (1970)

0% (2012)

0% (2006)

0% (1994)

0% (2007)

60% (2011)

0% (1995)

20% (2003)

20% (2009)

20% (2006)

33% (2004)

90% (1994)

100% (1989)

0% (1991)

0% (2010)