69% (2015)

48% (2023)

51% (2022)

71% (1987)

61% (2021)

70% (2003)

69% (2021)

67% (1977)

74% (2023)

67% (1992)

65% (2015)

71% (2023)

72% (2001)

73% (1995)

72% (2011)

40% (1978)

64% (1971)

75% (1986)

69% (2008)

63% (2017)