51% (2002)

66% (1989)

86% (2004)

81% (1989)

81% (2005)

74% (1999)

85% (2016)

83% (2018)

83% (2005)

84% (2018)

70% (2005)

78% (2001)

84% (1999)

71% (2010)

85% (2000)

83% (2013)

84% (1993)

78% (2011)

76% (2014)

77% (2019)