82% (2005)

87% (2002)

79% (1996)

68% (1981)

72% (2011)

73% (2001)

86% (2000)

74% (2010)

54% (2009)

80% (1999)

61% (2003)

79% (2013)

76% (2018)

80% (1995)

65% (2001)

80% (2002)

80% (1998)

43% (2002)

0% (2006)

48% (2002)