78% (2006)

83% (1997)

82% (2012)

58% (2013)

71% (1998)

74% (2009)

71% (2001)

69% (2002)

74% (2012)

58% (1999)

64% (2003)

55% (2013)

66% (1999)

79% (2010)

65% (1991)

63% (2014)

68% (1989)

58% (1997)

62% (2020)

59% (1996)