72% (2006)

100% (2010)

57% (2003)

0% (2006)

49% (2006)

0% (2008)

80% (2009)

0% (2011)

0% (2011)

80% (2001)

62% (1998)

80% (2006)

40% (2005)

42% (2011)

0% (2004)

0% (2003)

0% (2008)