78% (1987)

74% (1997)

67% (2009)

73% (2016)

74% (2011)

74% (1990)

73% (2011)

79% (2019)

78% (2003)

80% (2003)

68% (2005)

77% (2017)

58% (1992)

85% (1992)

58% (2009)

72% (2015)

71% (2010)

79% (2009)

79% (1995)

85% (2014)