62% (1997)

68% (2014)

57% (2005)

60% (2006)

63% (1998)

69% (1978)

0% (1997)

69% (1984)

55% (1999)

65% (2009)

44% (1985)

49% (1996)

44% (1992)

20% (1981)

59% (2012)

41% (2013)

55% (2010)

55% (2008)

80% (2010)

90% (2005)