92% (2006)

60% (2005)

90% (2001)

90% (1999)

0% (2007)

70% (1991)

100% (2007)

90% (2015)

60% (2008)

70% (2006)

20% (2006)

0% (2007)

98% (2007)

76% (2005)

20% (2001)

0% (2007)

0% (2011)

0% (2005)

0% (2008)

60% (2004)