50% (1979)

68% (2004)

66% (1985)

68% (2010)

64% (2010)

66% (1965)

85% (2017)

50% (1955)

50% (1958)

74% (1965)

75% (1976)

78% (1978)

60% (1988)

70% (1947)

70% (2005)

66% (2009)

47% (1989)

71% (1989)

50% (1964)

50% (1964)