69% (2015)

73% (2018)

65% (2009)

64% (2004)

59% (1978)

65% (2022)

72% (1983)

74% (1994)

56% (2003)

61% (1973)

52% (2012)

62% (1968)

73% (2023)

69% (2011)

61% (2020)

65% (2004)

42% (2021)

61% (1999)

68% (2023)

66% (2006)