85% (2010)

81% (2009)

70% (2005)

78% (2014)

68% (1981)

80% (1996)

78% (1992)

64% (1993)

72% (2015)

71% (2015)

81% (2001)

80% (2012)

73% (1995)

69% (2017)

76% (2013)

85% (1992)

58% (2000)

72% (2006)

58% (2002)

87% (2002)