51% (2002)

80% (2000)

69% (1982)

74% (1997)

60% (2003)

76% (2015)

67% (1975)

38% (1965)

83% (1975)

79% (2001)

78% (2005)

75% (1971)

50% (2011)

75% (1947)

78% (1996)

70% (2005)

52% (1978)

67% (2017)

69% (2018)

78% (1976)