72% (2014)

50% (2008)

50% (2003)

37% (2002)

20% (1999)

20% (2000)

20% (1997)

0% (2006)

40% (2005)

20% (2000)

0% (2001)

0% (2007)

20% (1996)

20% (2016)

20% (2011)

0% (1992)

0% (1995)

45% (2007)

20% (2002)

0% (2011)