67% (1960)

70% (2007)

66% (1993)

71% (2013)

23% (1971)

71% (2000)

70% (1981)

50% (2008)

54% (2009)

55% (1938)

69% (2004)

69% (2002)

68% (1990)

78% (1985)

58% (1991)

54% (1997)

58% (1974)

66% (2019)

75% (2009)

58% (2023)