82% (1979)

77% (2016)

72% (2014)

80% (1986)

75% (2018)

61% (2007)

62% (2017)

80% (1997)

52% (2007)

65% (2014)

83% (1977)

64% (2003)

76% (1987)

74% (2002)

76% (2009)

63% (2014)

70% (2017)

76% (2014)

74% (2008)

85% (1999)