83% (1997)

82% (2011)

83% (2006)

79% (1994)

55% (1984)

83% (2000)

84% (1990)

78% (2016)

76% (2011)

77% (2007)

75% (2005)

49% (1977)

77% (2004)

71% (2009)

79% (2018)

51% (2019)

78% (1995)

75% (2021)

76% (2013)

72% (1984)