66% (2011)

63% (1973)

55% (1968)

53% (1985)

63% (1971)

63% (1981)

74% (1965)

74% (1966)

68% (1996)

48% (1975)

0% (1960)

60% (2013)

45% (1957)

0% (1955)

70% (2006)

56% (1968)

76% (2005)

20% (1971)

40% (1968)

59% (1958)