35% (2006)

20% (2010)

0% (2001)

48% (2007)

69% (2010)

48% (2008)

49% (2008)

43% (2010)

47% (2008)

50% (2004)

60% (2011)

56% (2006)

43% (2006)

0% (2014)

45% (2011)

65% (2005)

0% (1997)

70% (2012)

70% (1993)

0% (2009)