62% (2005)

64% (2008)

74% (2012)

76% (1997)

80% (2000)

69% (1982)

66% (1975)

85% (1968)

70% (1996)

79% (1991)

52% (1978)

68% (1992)

74% (2019)

78% (1976)

78% (2015)

67% (2017)

80% (2005)

78% (1996)

72% (1979)

73% (2010)