62% (1997)

69% (1978)

80% (2010)

68% (2014)

60% (2006)

63% (1998)

58% (2005)

55% (1999)

65% (2009)

50% (1983)

55% (2008)

69% (1984)

90% (2005)

44% (1985)

49% (1996)

0% (1997)

44% (1992)

55% (2010)

0% (1999)

59% (2012)