67% (2006)

66% (2011)

64% (2003)

71% (2018)

68% (1977)

59% (1998)

63% (1949)

53% (1998)

68% (2015)

56% (2017)

52% (1997)

52% (2022)

63% (1982)

72% (1971)

52% (1976)

58% (1978)

59% (2014)

57% (2009)

69% (1985)

64% (2024)