50% (1983)

63% (1971)

53% (1969)

74% (1965)

65% (1981)

58% (1968)

63% (1973)

70% (1996)

53% (1985)

74% (1966)

67% (2011)

47% (1975)

59% (1967)

71% (2006)

76% (2005)

63% (2010)

56% (1968)

42% (1990)

60% (2016)

70% (1981)