76% (1986)

77% (2023)

73% (2015)

73% (2003)

69% (2011)

73% (2014)

64% (2018)

72% (1983)

50% (1988)

71% (2001)

60% (2011)

64% (2022)

75% (2013)

76% (1978)

64% (2016)

69% (1995)

72% (1992)

62% (2011)

79% (2001)

59% (2012)