71% (1986)

72% (2002)

56% (2007)

69% (2011)

77% (2021)

68% (2009)

76% (2004)

58% (2001)

80% (1995)

72% (1951)

70% (2003)

74% (2000)

77% (1975)

58% (2009)

63% (2008)

56% (2003)

72% (1961)

64% (1993)

55% (2024)

69% (1992)