77% (1973)

70% (1977)

72% (2011)

71% (1977)

65% (1995)

75% (2015)

67% (1976)

70% (2018)

52% (1979)

52% (1977)

62% (1978)

72% (1975)

76% (1977)

70% (2018)

68% (2018)

64% (1976)

74% (2003)

71% (2003)

64% (2023)

54% (1991)