43% (1998)

57% (2001)

64% (2008)

67% (2005)

61% (2013)

63% (2001)

78% (2012)

0% (2014)

82% (1999)

57% (2006)

0% (2004)

10% (2011)

20% (1970)

0% (2006)

0% (2009)

0% (2008)

0% (2002)